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Question

A body weight W Newton at the surface of the earth. Its weight at a height equal to half the radius of the earth will be :
  1. W2
  2. 2W3
  3. 4W9
  4. W4

A
4W9
B
W2
C
2W3
D
W4
Solution
Verified by Toppr

Given, R=6400km,w=mgg=wm

Now the weight of the body at the height is 12R

g=g(1dR)

So the weight of the body at the 12R

W=W(1R2R)=WR2R)=W2

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