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A rigid body is free to rotate about an ...

A rigid body is free to rotate about an axis. Can the body have non-zero angulalr acceleration of an instant when its angular velocity is zero?

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To determine whether a rigid body can have a non-zero angular acceleration at an instant when its angular velocity is zero, we can analyze the situation step by step. ### Step-by-Step Solution: 1. **Understanding Angular Velocity and Angular Acceleration**: - Angular velocity (ω) is the rate of change of angular displacement and indicates the direction and speed of rotation. - Angular acceleration (α) is the rate of change of angular velocity and indicates how quickly the angular velocity is changing. ...
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