A) no force is acting on particle
B) velocity of particle is constant
C) particle has no acceleration
D) no work is done
Correct Answer: D
Solution :
We know that when a particle is rotating on a circular path, a centripetal force \[\overrightarrow{{{F}_{c}}}\]exists on the rotating parallel. Instantaneous translational displacement \[{{\overrightarrow{d}}_{s}}\] is always \[90{}^\circ \] throughout its motion. Thus work done \[W=\overrightarrow{F}\cdot {{\overrightarrow{d}}_{s}}=Fds\,\cos 90{}^\circ =0\,\,(zero)\]
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