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Centripetal Acceleration

A particle is...

Question

A particle is moving with uniform speed along a circle of radius $20$ cm. If angular velocity of particle is $5 r a d s^{- 1}$ then its speed is:

A

25 m s^{- 1}

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B

5 m s^{- 1}

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C

1 m s^{- 1}

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D

0.2 m s^{- 1}

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Solution

The correct option is C $1 m s^{- 1}$
$R = 20 c m$ .
$ω = 5 r a d / s$
$V = ω R$
$= 0.20 \times 5$
$= 1 m / s$

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