Question

An object has an angular velocity. It also has an angular acceleration due to torques that are present. Therefore, the an-gular velocity is changing. What happens to the angular velocity if all the torques are suddenly removed?

Answer 1

Answer:

The mechanical work applied during rotation is the torque (τ ) times the rotation angle (θ ): W=τθ W = τ θ . The instantaneous power of an angularly accelerating body is the torque times the angular velocity: P=τω P = τ ω . ... As the Earth has a period of about 23.93 hours, it has an angular velocity of 7.29×10−5 rad/s.