A small solid sphere, with radius 0.25 cm and mass 0.61 g rolls without slipping on the inside of a large fixed hemisphere with radius 17 cm and a vertical axis of symmetry. The sphere starts at the top from rest.

(a) What is its kinetic energy at the bottom?

1 answer

See:
http://www.jiskha.com/display.cgi?id=1256606932