Two spheres are rolling without slipping on a horizontal floor. they are made of different materials, but each has mass 5.00 kg and radius 0.120 m. for each the translational speed of the center of mass is 4.00 m/s. sphere a is a uniform solid sphere and sphere b is a thin-walled, hollow sphere. how much work, in joules, must be done on the solid sphere to bring it to rest? how much work, in joules, must be done on the hollow sphere to bring it to rest?

Explanation:

given data:

mass of sphere is 5 kg

sphere A is solid sphere

sphere B  is hollow

we know that

moment of inertia for solid sphere is

moment of inertia for hollow sphere is

As both sphere are moving , thus they possessed transnational  and rotational kinetic energy

Total kinetic energy for A

Total kinetic energy for B

As sphere finaly come to rest hence final kinetic energy is zero

it doesn't. it was imagined up in the middle ages.

that would be because of both gravity and friction. so     c