A ring of mass and radius is rotating at about an axis perpendicular to its plane

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A ring of mass

(2\pi)\,\text{kg}

and radius

0.25\,\text{m}

is rotating at

300\,\text{rpm}

about an axis perpendicular to its plane. The tension developed in the ring, in newtons, is approximately (1) 50 (2) 100 (3) 175 (4) 250