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The weight of an object at the centre of...

The weight of an object at the centre of the earth of radius R is

A

zero

B

infinite

C

R times the weight at the surface of the earth

D

`1//R^(2)` times the weight at surface of the earth

Text Solution

Verified by Experts

The correct Answer is:
A
At a depth (d) below the surface of earth, `g'=g(1-d/R)`
At the centre if earth, `d=R :. g'=(1-d/R)=0`
Weight of object at the centre of earth, `W=mg'=mxx0=`zero.
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