The angular velocity of the second's hand of a watch is Options: A . &nbspπ60 rad/sec B . &nbspπ30 rad/sec C . &nbsp60π rad/sec D . &nbsp30π rad/sec

The angular velocity of the second's hand of a watch is

Question

The angular velocity of the second's hand of a watch is

Options:

A . π60 rad/sec

B . π30 rad/sec

C . 60π rad/sec

D . 30π rad/sec

Answer: Option B
:
B
We know that second's hand completes its revolution

(2 π)

in 60 sec

∴ ω = \frac{θ}{t} = \frac{2 π}{60} = \frac{π}{30}

rad/sec

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