Question

Suppose a pivot rod is rotating at a constant velocity. Is it in rotational equilibrium? Pls explain. Thanks.

Answer 1

The concept of rotational equilibrium is an equivalent to Newton’s 1ˢᵗ law for a rotational system. An object which is not rotating remains not rotating unless acted on by an external torque. Similarly, an object rotating at constant angular velocity remains rotating unless acted on by an external torque.
so rod is in rotaional equlibrium