Question

A body of weight W newton at the surface of the earth. Its weight at a height equal to half the radius of the earth will be. a] W / 2 b] 2W / 3 c] 4W / 9 d] 8W / 27

Answer 1

Answer:

Ahoy  

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R= 6400km  

W= mg  

g= W/m  

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now the weight of the body at the height = 1/2 of R

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g'= g ( 1- d/R )  

Weight of the body at the 1/2 R  

W' = W(1- R/2R )  

W' = W ( R / 2R )  

W' = 1/2 W Newton

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Explanation: