Physics
posted by Sandy .
A cylinder and a solid disc are released from rest from the top of a ramp.They roll down the hill without slipping. Which statement iscorrect?
a. The cylinder reaches the bottom first
b. The disc reaches the bottom first
c. They both reach the bottom at the same time
d. Could be any of the above depending on the relative sizes and masses of the disc and the cylinder.
I say D,am I right?

Do a computation. Write down the formula for the total kinetic energy of a rolling object. Leave the moment on intertia undetermined. Express the angular velocity in terms of the velocity (assume that the object has a radius of R).
If you write the result as:
E_kin = A/2 m v^2
then what is A?
Respond to this Question
Similar Questions

PHYSICS
A 20.0 kg solid cylinder, 0.25m in radius, and a 5.0 kg thin hollow sphere, 0.50 m in radius, are released from rest at the exact same time at the top of a 10m long ramp inclined at 30ยบ. a) What is the final velocity of the cylinder … 
physics
A solid uniform marble and a block of ice, each with the same mass, start from rest at the same height above the bottom of a hill and move down it. The marble rolls without slipping, but the ice slides without friction. Find the speed … 
physics help 3 please!!
A 2.0 kg cylinder (radius = 0.08 m, length = 0.50 m) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.77 m high and 5.0 m long. (a) When the cylinder reaches the bottom of the ramp, what … 
Physics please help!!
A 1.94 kg solid sphere (radius = 0.105 m) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.710 m high and 5.17 m long. When the sphere reaches the bottom of the ramp, what is its total … 
Physics
A hollow, thinwalled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 5.0 m. The cylinder arrives at the bottom of the plane 2.7 s after the sphere. Determine the angle between … 
Physics 203
A hollow, thinwalled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 5.0 m. The cylinder arrives at the bottom of the plane 2.7 s after the sphere. Determine the angle between … 
physics
A solid sphere of radius 23 cm is positioned at the top of an incline that makes 23 degree angle with the horizontal. This initial position of the sphere is a vertical distance 3 m above its position when at the bottom of the incline. … 
Physics Classical Mechanics
A hollow cylinder of outer radius R and mass M with moment of inertia about the center of mass Icm=MR2 starts from rest and moves down an incline tilted at an angle θ from the horizontal. The center of mass of the cylinder has … 
physics
A hollow cylinder, a solid cylinder, a hollow sphere, and a solid sphere roll down a ramp without slipping, starting from rest. The ramp is 0.25 m high. All the objects have radius 0.035. What are their final speeds? 
Physics C: Mechanics
A hollow, thinwalled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 5.0 m. The cylinder arrives at the bottom of the plane 2.6 s after the sphere. Determine the angle between …