A round object has a rotational inertia of I = ?MR2, where ? is a constant, M is its mass and R is its radius. It starts at rest and its center-of-mass rolls a distance d down a plane inclined at an angle ??, without slipping. As it rolls, it gains a center-of-mass speed of v and a rotational speed of ? over the distance d.

A) What is the change in rotational kinetic energy of the round object after it has moved the distance d?

B) What is the change in potential energy of the round object after it has moved the distance d?

C) Use the conservation of mechanical energy to determine the object's speed v at the distance d. Express the answer in terms of d, ?, ?, and any other constants necessary.

D) What fraction of the total kinetic energy of the rolling object is rotational? Express your answer in terms of ? alone.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

the components of a vector are the parts of the vectors that are to each other.

b perpendicular