The car is released from rest at a height h = 54.0 m above the ground and Define centripetal force. Second question has no real answer unless we assume that the potential energy is zero at the ground level. Mass is present in all terms of the equation, and so it can be divided out. Roller coasters are therefore not built with circular loops in vertical planes. This means that as the car accelerates down the slope, $U$ is being converted to $K$. How to react to a students panic attack in an oral exam? The frictional forces in joints are relatively small in all circumstances except when the joints deteriorate, such as from injury or arthritis. 19962023 Ultimate Rollercoaster, LLC. >. (Ignore rolling.) (b) Calculate the magnitude ofF.F. The existence of a maximum weight was mentioned in passing but I don't think a figure was stated (I'm guessing there's a figure written somewhere for riders and if you're over 200 kg or whatever you're out of luck.). Draw the free body diagrams for the car going around a horizontal curve, the bottom of a vertical loop, and the top of a vertical loop in which the cart is upside down. 0 + mghA = 0 + mghD - Wnc (b) Calculate the centripetal acceleration. (a) Calculate the ideal speed to take a 100.0 m radius curve banked at15.015.0. When you learn to drive, you discover that you need to let up slightly on the brake pedal as you come to a stop or the car will stop with a jerk. Include a free-body diagram in your solution. (a) On dry concrete. View Available Hint(s) Use of this site is governed by our Terms Of Service and Privacy Policy. asked by Heylee Green November 30, 2020 1 answer (a) What is the force of the car seat on the child at point A? for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A Because it is released from rest, its starting velocity is zero. A 1250-W toaster, a 320-W blender, and a 75-W lamp are, Q:True or FalseThe planet that has the longest day is mercury, A:Actually, the planet with the longest day in our solar system is Venus, not Mercury. In a later chapter, you will find that the weight of a particle varies with altitude such thatw=mgr02r2w=mgr02r2wherer0r0is the radius of Earth andris the distance from Earths center. My two kids in a car on their own would not be enough weight, it was said. r=a-b+c, Q:8. What type of movement could be caused by this force? 0, Q:Each of the six real batteries in the figure has an emf of 18.6 V and a resistance of 3.89 02. As shown below, the mass of block 1 ism1=4.0kg,m1=4.0kg,while the mass of block 2 ism2=8.0kg.m2=8.0kg. In the second part of this problem, you are asked to find stopping force given stopping distance. The coefficient of kinetic friction between the box and plane is 0.0300. For the sake of simplicity, assume that your roller coaster track, I have to draw a short roller coaster on graph paper Directions: 1. Flow rate Q=550 kg/h =0.153kg/s (c) Find the speed with which the hanging mass hits the floor if it starts from rest and is initially located 1.0 m from the floor. (Hint:since the distance traveled is of interest rather than the time,xis the desired independent variable and nott. Use the Chain Rule to change the variable:dvdt=dvdxdxdt=vdvdx.)dvdt=dvdxdxdt=vdvdx.). Be sure to draw diagrams, resolve all force vectors into horizontal and vertical components, and draw a free-body diagram. b) How hard does it press against the track at point B. (a) What is the radius of a bobsled turn banked at75.075.0and taken at 30.0 m/s, assuming it is ideally banked? To do this, he lowers his body 0.300 m and then accelerates through this distance by forcefully straightening his legs. then at 5 meters up While some can be, most are powered with gravity. It is equally correct to include it. R = (The gravitational force is balanced by the buoyant force of the water.). How much do the roller coaster carts weigh? Its mass is1.50103kg1.50103kg. If the terminal velocity of a 50.0-kg skydiver is 60.0 m/s, what is the value ofb? What is the work done by ? An airplane flying at 200.0 m/s makes a turn that takes 4.0 min. To learn more, see our tips on writing great answers. A 15-kg sled is pulled across a horizontal, snow-covered surface by a force applied to a rope at 30 degrees with the horizontal. With what minimum speed must they begin their swing? About yea much, give or take. Find the change, Q:A 800 lb horse pulls a 200 lb cart with If the thrust of the motor is a constant force of 40.0 N in the direction of motion, and if the resistive force of the water is numerically equivalent to 2 times the speedvof the boat, set up and solve the differential equation to find: (a) the velocity of the boat at timet; (b) the limiting velocity (the velocity after a long time has passed). M In this case, the non-conservative force acts between Points C and D, or over a displacement of 120 m as shown in the figure. A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 7.00 m. At point A the speed of the car is 10.0 m/s, and at point B, the speed is 10.5 m/s. (b) What is the maximum force that can be applied upward along the plane on the rope and not move the block? Athletes such as swimmers and bicyclists wear body suits in competition. The terminal speed is observed to be 2.00 cm/s. Some problems contain several physical quantities, such as forces, acceleration, velocity, or position. WebIn this case, the force of gravity can be determined from the equation Fgrav = m g. Using a g value of 9.8 m/s 2, the force of gravity acting upon the 864-kg car is approximately 8467 N. Step 5 of the suggested method would be used if the acceleration were not given. WebA 515-kg (empty weight), single cart roller coaster carrying 4 passengers (average mass of 64 kg per person) is towed to the top of a hill. Originally the PTC cars (3 seater) weighed about 1500 to 1600 lbs. If its mass is2.50103kg,2.50103kg,(a) what is the magnitude of the lift force? http://www.rcdb.com/ig222.htm?picture=6, > ok so how much does a normal car weigh in comparison to a The weight of roller coaster Suppose we take a sample of the last 100 roller coasters that were built and find that the average of those 100 is 105 seconds. What causes water to be removed from clothes in a spin-dryer? Magnitude of Vem i = [Hint: For (b) and (c), you will need to use(d/dt)(cost)=sint(d/dt)(cost)=sintand(d/dt)(sint)=cost.(d/dt)(sint)=cost. Including Wnc in some form is more general and gives an equation that is true in all situations, including those with non-conservative forces such as the second question in this problem. If there is no significant non-conservative force (as is the case in the first question) then all three versions of the equation are equivalent. A mysterious force acts on all particles along a particular line and always points towards a particular point P on the line. This player leaves the floor with a vertical velocity sufficient to carry him 0.900 m above the floor. (See picture below) What is the maximum speed the vehicle can have at point B and still remain on the track? around the world. at the best online prices at eBay! Assuming no initial rotation and a flow initially directly straight toward the drain, explain what causes the rotation and which direction it has in the Northern Hemisphere. If the gravitational potential energy of the car-Earth system is taken to be zero at C, what is its value It sits at the top of a hill with height 85 m. If it drops from this hill, how fast is it going when it reaches the bottom? Find the value of the coefficient of kinetic friction between the road and crate if the crate slides 50 m on the road in coming to rest. Friction is a contact force that opposes the motion or attempted motion between two systems. Intamin (older) cars were quite heavy around 2800 each and (newer) around 2500 each. = mgh where m is the mass of your cart in grams, h is the height of your track and g=9.8 N/kg to calculate the potential energy. (b) Will a metal cabinet lying on the wooden bed of the truck slip if it accelerates at this rate? A flea jumps by exerting a force of1.20105N1.20105Nstraight down on the ground. Show that the normal force on the car at the bottom of the loop exceeds the normal force at the top of the loop by six times the cars weight. A 2.50-kg fireworks shell is fired straight up from a mortar and reaches a height of 110.0 m. (a) Neglecting air resistance (a poor assumption, but we will make it for this example), calculate the shells velocity when it leaves the mortar. Bx=1.3 T (Remember that friction always acts in the direction opposite that of motion or attempted motion between surfaces in contact. T Each cart rolls freely with negligible friction. (Drag area is2.44m2)2.44m2)Assume all values are accurate to three significant digits. just a thought, > Hi, does anyone have any idea how much the average roller To maintain a constant speed, the force provided by a cars engine must equal the drag force plus the force of friction of the road (the rolling resistance). WebThe current coasters have these weight limits based on the manufacturer requirements: SFA: Batwing256 pounds Since only one coaster has an official weight limit, then this does not mean that those with very a large weight can ride. Railroad tracks follow a circular curve of radius 500.0 m and are banked at an angle of5.05.0. Because there is no friction between Points A and C, the energy of the rollercoaster remains constant over that portion of the motion. The ride's queue line is surrounded by bamboo, which adds to the jungle theming. AL MathJax reference. If the coefficient of kinetic friction between tires and road is 0.550, and the acceleration was constant during braking, how fast was the car going when the wheels became locked? The table and the pulley are frictionless. 15.0 V initial velocity of car = V0 = 0 m/s Show that the acceleration of any object down an incline where friction behaves simply (that is, wherefk=kN)fk=kN)isa=g(sinkcos).a=g(sinkcos). You can ask a new question or browse more Science questions. A plumb bob hangs from the roof of a railroad car. (a) At point A #=18 m//s# In other words. #implies v_B^2=gh# A responsible roller coaster designer would allow for a considerable safety margin, by starting the ride from a sufficient height $h_1$ to prevent any stalling of the cars on inclines. on d = 10.0 mm and dielectric constant k =, A:Given In the simple Bohr model of the ground state of the hydrogen atom, the electron travels in a circular orbit around a fixed proton. m, William Moebs, Samuel J. Ling, Jeff Sanny, (Figure 1) A roller-coaster car may be represented by a block of mass 50.0 kg. The staff loading individual (separate) cars on the ride said each had a minimum and maximum requirement to clear a hill - too little, it wouldn't accelerate enough down one hill to clear the next up, too much it wouldn't go up that hill either. 1=45.5 We are given complete information about the energy of the roller-coaster at Point A and are asked about the force required to stop it by Point D. Therefore, the second question can be answered by comparing A and D. Because the energy in the roller-coaster is the same from A to C, it is equally fine to compare B to D or C to D (if you solve for vC first.). in the interior, A:givenNetchargeofcell=-7.52pC, Q:Bark Angle Greater than 10 pounds (a) When rebuilding his cars engine, a physics major must exert3.001023.00102N of force to insert a dry steel piston into a steel cylinder. To simulate the apparent weightlessness of space orbit, astronauts are trained in the hold of a cargo aircraft that is accelerating downward atg. Why do they appear to be weightless, as measured by standing on a bathroom scale, in this accelerated frame of reference? (c) The elevator decelerates at a rate of0.600m/s20.600m/s2for 3.00 s. What is the tension in the cable during deceleration? A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at20.020.0to the horizontal. at the best online prices at eBay! If we ASSUME U = 0 at The force constant of the spring is 450 N/m. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. There would be a normal force pointing up and mg pointing down. ground and, , A:Here maximum current is Imax=9.5A Total Internal Reflection and Critical Angle to Measure Index of Refraction Shown below is a 10.0-kg block being pushed by a horizontal forceFFof magnitude 200.0 N. The coefficient of kinetic friction between the two surfaces is 0.50. The normal force on each rider follows the same rule. A) 5.0 m/s2 weight at a distance of WF You will first need to note that the drag force is equal to the weight at terminal velocity. The chain return is now usually located inside the spine of the track rather than a separate component. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. You may use the result of the previous problem. Mass of car MA=1600 kg,, Q:A novice skier, starting from rest, slides down an icy Intamin Hyper train? The coefficient of static friction between the box and the surface on which it rests is 0.24. The space probe has mass 20.0 kg and contains 90.0 kg of fuel. Car can go only up to initial height #h#, 59739 views Find the terminal velocity of a spherical bacterium (diameter2.00m2.00m) falling in water. acceleration = a = 4 m/s2 There are no significant non-conservative forces (like friction) present between Points A and B, and so the work done by non-conservative forces is about zero. Where must an object be placed in order, Q:A parallel-plate air capacitor with a capacitance of (b) What is the velocity after 15.0 s? A large rocket has a mass of2.00106kg2.00106kgat takeoff, and its engines produce a thrust of3.50107N.3.50107N. Determine the work done on the block by (a) the applied force, (b) the normal force exerted by the table, (c) the gravitational force, and (d) the net force on the block. The magnitude of static friction force between two materials stationary relative to each other is determined using the coefficient of static friction, which depends on both materials. A breeze blowing on the flea parallel to the ground exerts a force of0.500106N0.500106Non the flea while the flea is still in contact with the ground. KEA + PEA = KED + PED - Wnc Take the size across of the drop to be 4 mm, the density to be1.00103kg/m31.00103kg/m3, and the surface area to ber2r2. Explain, considering especially that tape can stick to vertical walls and even to ceilings. Formulate a list of pros and cons of such suits. m/s (c) On ice, assuming thats=0.100s=0.100, the same as for shoes on ice. and ? > just a thought > Originally the PTC cars (3 seater) weighed about 1500 to 1600 lbs. Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involvedthat is, the tires are not allowed to slip during the acceleration. The car is released from rest at a height h = 54.0 m above the If the cart starts at a height h1 = 10m, how much must the, At the top of its drop hill, a 1,000 kg roller coaster has 200,000 J of total energy. View Available Hint(s) Submit Provide Feedback or Part B for Part J undo for Part B redo for Part B reset for Part B keyboard shortcuts for Part B help for Part B m, Principles of Physics: A Calculus-Based Text. WebQuestion: In the figure, a frictionless roller coaster car of mass m=661 kg tops the first hill with speed vo= 10.3 m/s at height h = 40.8 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? Assume there is no friction or air resistance between Points A and C. How fast is the roller-coaster moving at Point B? Take care. As a result, the particle moves along a straight path from a Cartesian coordinate of (0m,0m) to (5m,6m) . As shown below, ifM=5.50kg,M=5.50kg,what is the tension in string 1? Explain. Assume the child is not holding on and does not wear a seat belt. A roller coaster car is going over the top of a 18-m-radius circular rise. All that matters for describing motion and energy is that you explicitly state where your reference point is. The Conservation of Energy equation between Point A and Point B reduces to the kinematic equation v2 = v02 + 2a(x), although it takes some effort to prove that correctly given that velocity and displacement are vectors. c=1.8i^+2.8j^+4.6k^ Why is it not exactly an inertial frame? Distance (cm) When a toilet is flushed or a sink is drained, the water (and other material) begins to rotate about the drain on the way down. Again, energy is the most direct way to understand this problem. It may not display this or other websites correctly. What's New When the car takes a turn, the track must be able to supply a force $F_c$ known as the centripetal force in order to keep the car on the track: $\large{F_c=\frac{mv^2}{R}}$, where $R$ is the radius of the bend. How much do the roller coaster carts weigh? Find (a) the value of the constantbin the equationv=mgb(1ebt/m),v=mgb(1ebt/m),and (b) the value of the resistive force when the bead reaches terminal speed. As the cart moves through the loop, it is moving in a circle and therefore it is accelerating. (b) Calculate his acceleration while he is straightening his legs. (b) What is its acceleration once it starts to move, if that force is maintained? A double-incline plane is shown below. Find the net force on the helicopter att=3.0s.t=3.0s. (c) If it actually starts 5.00 m higher than your answer to (b), how much energy did it lose to friction? The normal force on an object is not always equal in magnitude to the weight of the object. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, A machine is a device that accepts energy in some available form and utilizes it to do a type of work. There is friction between the two blocks (coefficient of friction). Once it begins to move, what is its acceleration and what reduced force is necessary to keep it moving upward at constant speed? KE = 500kg 9.81 m s 30m. How white light is different from rest of electromagnetic spectrum. (b) what is the radius of the turn? The terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid. D. What is the apparent weight of the car at the bottom of a 4.5 m radius loop at 25 m/s?! During decay current reaches the 37% of maximum current., Q:Some fish have a density slightly less than that of water and must exert a force , by swimming , to, A:The concept behind this problem is buoyancy, which is the upward force that a fluid exerts on an, Q:10:21 AM Thu Mar 2 Note that the acceleration is independent of mass and reduces to the expression found in the previous problem when friction becomes negligibly small(k=0).(k=0). What is it? This is the principal mode of operation of roller coasters (without any propulsion systems installed in the cars) which allows them to negotiate a series of slopes and hills without running out of energy. KE = 147150 Joules. A roller-coaster car has a mass of 509 kg when fully loaded with passengers. (a) What is the final velocity of a car originally traveling at 50.0 km/h that decelerates at a rate of0.400m/s20.400m/s2for 50.0 s? A:If an observer observe an object, it is due to observer received some light from the object. If L=6 H, determine R. In this case, you start out with stored gravitational potential energy and convert part of that energy to kinetic energy. How do I determine the molecular shape of a molecule? Assume the mass is 4 kg. Therefore, at any location #x#, speed #=sqrt (v_x^2+v_y^2)# One depended upon the speed, while the other was proportional to the square of the speed. The barrel is spun up and the floor drops away. The coefficient of friction betweenm1m1and the inclined surface isk=0.40.k=0.40. What is the normal force between the piston and cylinder? distance of 75 m. What is its, Q:Show and explain your work, the other solutions showed by one of your expert didnt help me., Q:The ammeter shown in the figure below reads 2.20 A. Inspection reveals that #y# component of velocity is created due to change of #PE=mgh#, in to #KE=1/2 m v^2#. Calculate the acceleration of the system. As shown below, the coefficient of kinetic friction between the surface and the larger block is 0.20, and the coefficient of kinetic friction between the surface and the smaller block is 0.30. (c) What minimum speed is required to keep the child in his seat at point A? Q:Someone wanted to build a scale model of the atom with a nucleus 1.4 m in diameter. How does Charle's law relate to breathing? In its present state, the crate is just ready to slip and start to move down the plane. For small objects (such as a bacterium) moving in a denser medium (such as water), the drag force is given by Stokes law. Provide Feedback > philadelphia tobbogan train cars weigh on average 800#'S FOR WOODEN COASTERS, > Hi, does anyone have any idea how much the average roller Qualitative Plate separation d = 10 mm =10 10-3m Just like each said, as long as you can fit into t Continue Reading 6 Sponsored by The Penny Hoarder with the track. The force of gravity will cause it to speed up as it moves down the hill. How long will it take for each skydiver to reach the ground (assuming the time to reach terminal velocity is small)? Express your answer numerically, in joules. Such a large normal force is dangerous and very uncomfortable for the riders. Figure It is at rest and in equilibrium. Starting from rest, a skier, m = 75 kg, Minimising the environmental effects of my dyson brain, The difference between the phonemes /p/ and /b/ in Japanese. Draw the side view of your roller coaster on graph paper. She has a lunch box resting on wax paper, so that there is very little friction between it and the merry-go-round. A time-dependent force ofF(t)F(t)is applied at timet=0t=0, and its components areFx(t)=ptFx(t)=ptandFy(t)=n+qtFy(t)=n+qtwherep,q, andnare constants. Take the density of the bacterium to be1.10103kg/m31.10103kg/m3. Is the total mechanical energy conserved in a system that's a simplifying approximation of an actual roller coaster? What is the coefficient of kinetic friction between the child and the surface of the incline? h Free shipping for many products! Are we talking about filled with fat ACErs or without? A basketball player jumps straight up for a ball. Given data- Suppose that the resistive force of the air on a skydiver can be approximated byf=bv2.f=bv2. Modern roller coasters have vertical loops like the one shown here. A 2.00 kg block (mass 1) and a 4.00 kg block (mass 2) are connected by a light string as shown; the inclination of the ramp is40.040.0. The car slides off the road. Answer the same question for a body sliding down a curved surface. The roller-coaster track includes a circular loop of radius R in a vertical plane. Figure P5.22 (page 149) shows an actual design. In this case, the changing position of the roller-coaster reflected a change in the energy of the system, we are not asked to find time, and there are no significant unknown energy losses from the system. A half-full recycling bin has mass 3.0 kg and is pushed up a40.040.0incline with constant speed under the action of a 26-N force acting up and parallel to the incline. 6. properties a lens, Q:One student pulls a car with 20 N to the East. Ex=232 N/C Find the following. WF = Fd cos. (d) How high will the car go on the last hill ? A roller-coaster vehicle has a mass of 500 kg when fully loaded with passengers. A. (b) What is unreasonable about the result? Would the direction of rotation reverse if water were forced up the drain? It then drops 46 m before climbing 28 m to the top of the second hill. Given also is that initial velocity is towards the #x# axis only. Anna says a satellite in orbit is in free fall because the satellite keeps falling toward Earth. = 5 9.81 * 5 Joules. A physics major is cooking breakfast when she notices that the frictional force between her steel spatula and Teflon frying pan is only 0.200 N. Knowing the coefficient of kinetic friction between the two materials, she quickly calculates the normal force. (b) What is her initial acceleration if she is initially stationary and wearing steel-bladed skates that point in the direction ofFtot?Ftot? Arrow cars (2 seaters) weighed around 1600 lbs each and Arrow (3 seaters) around 1700 lbs. It's going to vary from coaster to coaster, and car to car. Because there is no friction over this portion of the track, the only energy conversion that takes place is between kinetic energy and gravitational potential energy. Its position at any time is given byx(t)=pt3+qt2x(t)=pt3+qt2wherepandqare constants. Physics 1 Answer A08 Jan 19, 2016 (a) At point A = 18m/s (b) At point B 26.94m/s IfF=10NF=10NandM=1.0kgM=1.0kg, what is the tension in the connecting string? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The problem with trying to answer is that your questions are far to general. Describe the path of the car as it leaves the road. total positive charge Q = 0.122 nC uniformly, Q:A dipole with charges ? The path of the coaster from its initial point shown in the figure to point B involves only up-and-down motion (as seen by the riders), with no motion to the left or right. During its fall, how much work is done on the mouse by air resistance? Also, if the object is on an inclined plane, the normal force is always less than the full weight of the object. Explain in an inertial frame of reference (Earth is nearly one) what pins the riders to the wall, and identify all forces acting on them. A limit involving the quotient of two sums, Short story taking place on a toroidal planet or moon involving flying. When starting a foot race, a 70.0-kg sprinter exerts an average force of 650 N backward on the ground for 0.800 s. (a) What is his final speed? A 60.0-kg and a 90.0-kg skydiver jump from an airplane at an altitude of6.00103m6.00103m, both falling in the pike position. The contestant now pulls the block of ice with a rope over his shoulder at the same angle above the horizontal as shown below. Webyour cart at the top of your coaster. Race car drivers routinely cut corners, as shown below (Path 2). In that case. A banked highway is designed for traffic moving at 90.0 km/h. The CERN particle accelerator is circular with a circumference of 7.0 km. The initial speed of the crate is the same as the truck, 100 km/h. (b) At point B. Webto the floor of the roller coaster at all times, allowing the mass to move up and down in the tube freely.) #half of initial #PE # has got converted into #KE # of the car Assume a cart enters the loop at a speed of 25 m/s or 56 mph. What is the depth in meters of, Q:In the figure a solid sphere of radius a-3.90 cm is concentric with a spherical conducting shell of, A:Given An 850 kg roller-coaster is released from rest at Point A of the track shown in the figure. You can apply concepts from kinematics and dynamics to solve these problems. The mass of the front barge is2.00103kg2.00103kgand the mass of the rear barge is3.00103kg.3.00103kg. A:Given data- The kinetic energy of the roller coaster is 2*10^5 J The formula to calculate kinetic energy is, E_k=1/2mv^2 Here, The mass of the roller coaster is, m= 1000 kg The speed of the roller coaster is, v= 20 ms^-1 Therefore, E_k=1/2*1000*20^2 =2*10^5 J direction. In other words, you want to find how much force is required to convert the roller-coasters kinetic energy into heat and sound in a given distance. So I set the normal force equal to zero just before it would leave the track and use.. 2023 Physics Forums, All Rights Reserved, Roller coaster and centripetal acceleration, Speeds of the rolling ball at different points in this roller coaster track, Speed at the top of an elliptical roller coaster loop, Normal force at the top of a vertical loop -- Circular Motion Dynamics, Help me solve this equation please -- Roller Coaster Motion, Physics roller coaster problem that uses kinematics, forces, work, power and energy, Grade 12 Kinematics Question -- Throwing a ball at an angle from the top of a cliff, Buoyant force acting on an inverted glass in water, Newton's Laws of motion -- Bicyclist pedaling up a slope, Which statement is true? What average force was exerted to slow the first dolphin if it was moving horizontally? The, Q:, Problem 7: A computer disk starts from rest at time t = 0 and accelerates uniformly for 0.500 s, A:Given data- The Law Energy Conservation tells us that: $T=K+U$, with $T$ the Total Energy of the car (and riders). (a) Show that the particle moves in a circle of radiusA. This makes physical sensethe force required to stop the roller-coaster depends on its mass.
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