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A body is whirled in a horizontal circle...

A body is whirled in a horizontal circle of radius 20 cm. It has an angular velocity of `10 rad s ^(-1).` What is the linear velocity at any point on the circular path ?

A

`10 ms ^(-1)`

B

`2 ms ^(-1)`

C

`20 ms ^(-1)`

D

`sqrt2 ms ^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Given `r = 20 cm = 20 xx 10 ^(-2) m = 2 xx 10 ^(-1) m`.
We know ` v = r omega`
`or, v = 2 xx 10 ^(-1) xx 10 = 2 ms ^(-1).`
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