Question

A solid iron sphere `A` rolls down an inclined plane. While an identical hollow sphere `B` of same mass sides down the plane in a frictionless manner. At the bottom of the inclined plane, the total kinetic energy of sphere `A` is.
A. less than that of `B`
B. equal to that of `B`
C. more than that of `B`
D. Sometimes more and sometimes less

Answer 1

Correct Answer - B
In both the cases the loss of gravitational potential energy and the resulting gain total kinetic energy is same.