A wheel initially at rest acquires an angular velocity of 128 rad s^(-1) in 4 s. Hence its constant angular acceleration is ………..

A wheel initially at rest acquires an angular velocity of 128 rad s^(-

1.	A wheel initially at rest acquires an angular velocity of 128 rad s^(-1) in 4 s. Hence its constant angular acceleration is ………..
Answer» 32 rad `s^(-2)` 128 rad `s^(-2)` 16 rad `s^(-2)` 64 rad `s^(-2)` Solution :`ALPHA=(omega-omega_(0))/(t)` `THEREFORE alpha=(128-0)/(4)` `therefore alpha=32" rads s"^(-2)`