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A thin rod of mass M and length L is ben...

A thin rod of mass `M` and length `L` is bent into a semicircle as shown in diagram. What is a gravitational force on a particle with mass `m` at the centre of curvature?

A

`(4pi^(2)GMm)/(L^(2))`

B

`(GMm)/(4pi^(2)L^(2))`

C

`(2piGMm)/(L^(2))`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
Field produced by circular rod at its centre is zero. Hence no force is acting on the particle placed at the centre.
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