A thin circular ring of mass and radius is to rotate about an axis tangent to the…

PHYSICS · Single correct · AP · Physics C: Mechanics · Torque and Rotational Dynamics · Torque and Rotational Dynamics

Problem

A thin circular ring of mass

0.50\,\text{kg}

and radius

0.20\,\text{m}

is to rotate about an axis tangent to the ring and lying in its plane. The moment of inertia of the ring about this axis is (a)

0.025\,\text{kg m}^2

(b)

0.040\,\text{kg m}^2

(c)

0.030\,\text{kg m}^2

(d)

0.020\,\text{kg m}^2