Angular velocity at any time \(t\) of a rotating body is given as \(\omega \left(t\right)   =   \omega_{0}   +   \alpha t\). Its magnitude of angular acceleration:

1. is always constant.
2. increases with time.
3. decreases with time.
4. first increases then decreases with time.

Subtopic:  Rotational Motion: Kinematics |
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