Question

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

• A. $25m{s}^{-1}$
• B. $5m{s}^{-1}$
• C. $1m{s}^{-1}$
• D. $0.2m{s}^{-1}$

Answer 1

The correct option is C $1m{s}^{-1}$

$R=20cm$.

$\omega =5rad/s$
$V=\omega R$
$=0.20\times 5$
$=1m/s$