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A solid disc is rotating at an angular s...

A solid disc is rotating at an angular speed of 20 rad/s. It is decelerated at a constant rate of `"2 rad/s"^(2)`. Through what angle the disc will turn before coming to rest?

A

100 radian

B

50 radian

C

200 radian

D

300 radian

Text Solution

Verified by Experts

The correct Answer is:
A
`omega^(2)-omega_(0)^(2)=2alpha theta`
`therefore 0-400=2xx(-2)xxtheta" "therefore theta="100 radian"`
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