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At surface of earth weight of a person i...

At surface of earth weight of a person is 72N then his weight at height `R//2` from surface of earth is (R=radius of earth)

A

`28N`

B

`16N`

C

`32N`

D

`72N`

Text Solution

Verified by Experts

The correct Answer is:
C
Weight of the body at height `R`,
`W'=W(R/(R+2R))^(2)`
`=W(R/(R+R/2))^(2)=W(2/3)^(2)`
`=4/9W=4/9xx72=32N`
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