A particle of mass M moves with constant speed along a circular path of radius r

Question

A particle of mass M moves with constant speed along a circular path of radius r under the action of a force F. Its speed is

Options:

A . √rFm

B . √Fr

C . √Fmr

D . √Fmr

Answer: Option A
:
A

F = \frac{m v^{2}}{r} \Rightarrow v = \sqrt{\frac{r F}{m}}

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