When a body moves with a constant speed along a circle
When a body moves with a constant speed along a circle
no acceleration is produced on the body
no work is done on it
its velocity remains constant
no force acts on the body
Solution
When a body moves with constant speed v along a circle, it has a centripetal acceleration but no linear acceleration.
The centripetal force F acting on the body is at right angle to the displacement s.
Since,
$
\begin{aligned}
W & =F \cdot s=F s \cos \theta \\
& =0 \quad\left(\because \cos 90^{\circ}=0\right)
\end{aligned}
$
Hence, no work is done on it