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A wheel rotates with a constasnt acceler...

A wheel rotates with a constasnt acceleration of `2.0rad/s^2`. If the wheel starts from rest, how many evolutions wil it make in the first 10 senconds?

A

`3`

B

`6`

C

`9`

D

`12`

Text Solution

Verified by Experts

The correct Answer is:
A
`omega_(0)=0(S_(n)=u+1/2a(2n-1))`
`theta_(10)=alpha/2(2n-1)=2/2(2xx10-1)=19rad`
Number of revolutions `19/(2pi)=3`
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