For a rigid body that remains at rest in all respects

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

For a rigid body that remains at rest in all respects, which of the following conditions must be satisfied? (a)

\sum \tau \neq 0

but

\alpha = 0

(b)

\sum \tau = 0

and

\omega = 0

(c)

\sum \tau = 0

and

\alpha = 0

(d)

\sum \tau = 0

but

\alpha \neq 0