A solid cylinder of mass and radius spins about its central axis at an angular speed of

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems

Problem

A solid cylinder of mass

2.0\,\text{kg}

and radius

0.20\,\text{m}

spins about its central axis at an angular speed of

10\,\text{rad}\,\text{s}^{-1}

. The cylinder’s center of mass remains fixed in space. What is its rotational kinetic energy? (a)

4.0\,\text{J}

(b)

1.0\,\text{J}

(c)

2.0\,\text{J}

(d)

8.0\,\text{J}