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A man weighs W on the surface of earth. ...

A man weighs W on the surface of earth. What is his weight at a height equal to R?

A

W

B

W/2

C

W/4

D

W/8

Text Solution

Verified by Experts

The correct Answer is:
C
g. at height R is given by `(g.)/(g)= (R^(2))/(R^(2) (1+ (h)/(R ))^(2))`
At `h= R (g.)/(g)= (R^(2))/(R^(2) (1+1)^(2))= (1)/(4)`
`rArr g.= (g)/(4)`. So `W.= (W)/(4)`
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