Question

a body weight W newton of the surface of earth its weight at height equal to half the radius of the earth will be

Answer 1

Answer:

the radius of earth is 56.96*10the power 16

Answer 2

Answer:

W'=4W/9

Explanation:

      Given that

Weight on the earth surface = W

We can say that

$W=G\dfrac{Mm}{R^2}$

m= Mass of the body

M=Mass of earth

R= radius of the earth

At h=R+R/2

  h= 3R/2

$W'=G\dfrac{Mm}{h^2}$

$W'=G\dfrac{Mm}{\dfrac{9R^2}{4}}$

W'=4W/9