Physics

Problem

A thin hoop

(I = M R^{2})

and a solid sphere

(I = \tfrac{2}{5} M R^{2})

each have mass

2.0\,\text{kg}

and roll without slipping at a speed of

3.0\,\text{m/s}

. For which object is more than one-half of its total kinetic energy rotational? a) Only the hoop b) Neither the hoop nor the sphere c) Only the sphere d) Both the hoop and the sphere

Browse the problem library