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The angular speed of a moton wheel is in...

The angular speed of a moton wheel is increased from `1200` rpm to 3120 rpm in `16` seconds. (i) What is the angular acceleration, assuming the acceleration to be uniform ? (ii) How many revolutions does the engine make during this time ?

A

`4pirad//s^2 and 200`

B

`2pirad//s^2 and 470`

C

`4pirad//s^2 and 576`

D

`3pirad//s^2 and 390`

Text Solution

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The correct Answer is:
C
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