A uniform solid sphere rolls down an incline of height 3 m after starting from rest.In order to calculate its speed at the bottom of the incline,one needs to know:
A)the mass of the sphere.
B)the radius of the sphere.
C)the mass and the radius of the sphere.
D)no more than is given in the problem.

Question

Quizplus · Accepted Answer

The speed at the bottom depends only on the height from which it rolls down due to conservation of energy, not on its mass or radius.

A Uniform Solid Sphere Rolls Down an Incline of Height