Question

A body weight W, is projected vertically upwards from earth's surface to reach a height above the earth which is equal to nine times the radius of earth The weight of the body at that height will be :

• A. $\frac{ W }{100}$
• B. $\frac{ W }{3}$
• C. $\frac{W}{91}$
• D. $\frac{W}{9}$

Answer 1

Answer: (A)

$\frac{ W }{100}$

Answer 2

$g'=\frac{GM}{(10R)^2}=(\frac{g}{100})$
$W'=(\frac{W}{100})$
So ,the correct answer is (A) : $\frac{W}{100}$