A solid sphere of mass and radius has rotational kinetic energy about an axis through…

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

Problem

A solid sphere of mass

4\,\text{kg}

and radius

15\,\text{cm}

has rotational kinetic energy

9\,\text{J}

about an axis through its centre. Determine its angular speed.