A hollow cylinder (hoop), a solid cylinder (disk), and a solid sphere, each of mass M and radius R, roll down a hill of height h. Rank the objects based on their total kinetic energy at the bottom of the hill. Rank the one with the most energy 1, etc. If two are equal, give them the same ranking. hoop___________ disk_______________sphere_______________ Justify your ranking

A hollow cylinder (hoop), a solid cylinder (disk), and a solid sphere, each of mass M and radius R, roll down a hill of height h. Rank the objects based on their total kinetic energy at the bottom of the hill. Rank the one with the most energy 1, etc. If two are equal, give them the same ranking. hoop___ disk_sphere_________ Justify your ranking

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Q# No 01: Consider the system of pulleys, masses and string shown in figure. A light string of length b is attached at point A, passes over a pulley at point B located a distance of 2d away, and finally attaches to mass mi.Another pulley with mass m2 attached passes over the string, pulling it down between A and C calculate the distance xi when the system is in equilibrium and determine whether the equilibriums stable or unstable.The pulleys are massless 2d
3. Kris stands on the edge of a merry-go-round, which spins without friction. She walks towards the center of the platform. As Kris moves toward the center, what happens to the kinetic energy of the system? Explain.
I included two pictures. Please show me how to approach the problem in the correct manner based on the feedback given. It is okay to completely change the answer if you need to. Please give a reasoning to why the claim is not reasonable and the work needed to back this up.
Question 4 (4 points) I Listen A solid billiard ball with a mass of 230g and a radius of 4.00 cm is rolling across a flat surface with a speed of 1.35 m/s. It encounters an incline at a 20° with respect to the horizontal. How far up the incline does the ball roll before it stops? Answer this question using the principle of energy conservation. Use g=10 m/s² for the acceleration due to gravity.
Review (Figure 1)A roller-coaster car may be represented by a block of mass 50.0 kg . The car is released from rest at a height Correct answer is shown. Your answer 7848 J was either rounded differently or used a different number of significant figures than required for this part. h = 48.0 m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 16.0 m at ground level, as shown. As you will learn in the course of this problem, the initial height 48.0 m is great enough so that the car never loses contact with the track, Part B Find the minimum initial height hmin at which the car can be released that still allows the car to stay in contact with the track at the top of the loop. Express your answer numerically, in meters. • View Available Hint(s) Figure Nνα ΑΣφ hmin = Submit Previous Answers X Incorrect; Try Again; 4 attempts remaining Your answer imples that the car starts off lower than the top of the loop. Provide Feedback Next > P Pearson
1. Choose the correct answer from the option list below to answer the following parts. a) A ball is rolling across the floor at a constant velocity. What is the value of the change in its kinetic energy, ΔEk? b) A ball starts rolling down a ramp. What is the value of the change in its kinetic energy, ΔEk? c) A ball slows down as it rolls up a hill. What is the value of the change in its kinetic energy, ΔEk? i) Zero ii) Positive iii) Negative
Kinetic Energy of Three Bowling Balls Kinetic Ball Mass Speed energy A 4.0 kg O m/s O J В 4.0 kg 8.0 m/s 130 J C 5.0 kg 8.0 m/s 160 J 3. Based on the table above, which statement regarding kinetic energy is true? sc.7.P.11.2 The kinetic energy of an object is calculated by multiplying mass times speed. The objects at rest will have more kinetic energy than the objects in motion. C Objects that have the same mass have the same kinetic energy no matter how fast the object moves. When objects travel at the same speed, the more massive object has more kinetic energy. D
3. A mass m is pushed against a spring with spring constant k and held in place with a catch. The spring compresses an unknown distance x. When the catch is removed, the mass leaves the spring and slides along a frictionless circular loop of radius r. When the mass reaches the top of the loop, the force of the loop on the mass (the normal force) is equal to twice the weight of the mass. a) Using conservation of energy, find the kinetic energy at the top of the loop. Express your answer as a function of k, m, x, g, and R. b) How far was the spring compressed?
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Item 11 The pulley in (Figure 1) has radius 0.160 m and moment of inertia 0.380 kg - m². The rope does not slip on the pulley rim. Figure 4.00 kg 5.00 m 2.00 kg 1 of 1 Part A V = Use energy methods to calculate the speed of the 4.00 kg block just before it strikes the floor. Express your answer with the appropriate units. μÀ Value Submit Request Answer
Two identical balls, A and B, are each attached to very lightstring, and each string is wrapped around the rim of a pulley of mass Mon a frictionless axle. The only difference is that the pulley for ball Ais a solid disk, while the one for ball B is a hollow disk. If both balls are released from rest and fall the same distance,which one will have more kinetic energy, or will they have the samekinetic energy? Explain your reasoning.
Two solid spheres of radius R and mass m are initially separated by a distance d such that the two centres of mass are separated by d+3R as shown below. The spheres are initially at rest, but the gravitational force accelerates them towards each other until they collide.a) Calculate the initial mechanical energy of the system.b) Calculate the gravitational potential energy of the system at the moment they collide.c) Derive an expression for v. State carefully what physical law you are applying.d) Show that, in the limit d >> R, the velocity v is independent of d.