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The weight of a body at earth's surface ...

The weight of a body at earth's surface is W. At a depth half way to the centre of earth it will weight

A

`R`

B

`2R`

C

`4R`

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
C
Radius of curvature `=(("velocity")^(2))/("Normal acceleration")`
Radius of curvature =`((2v)^(2))/((v^(2))/R)=4R`
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