If W is the weight on the surface of Earth then weight of sa... | Physics | SolveeIt | Solveeit

Today, August 19

Question

If W is the weight on the surface of Earth then weight of same body at a height Re/4 above the surface of earth is equal to (Re = Radius of Earth)

A

$\frac{4}{5}W$

B

$\frac{16}{25}W$

C

$\frac{25}{16}W$

D

$\frac{5}{4}W$

Answer

$\frac{16}{25}W$

Explanation

Solution

The correct option is (B): $\frac{16}{25}$ W
$g'=[\frac{gxR2}{\frac{25}{16}R2}]$
$g'=\frac{16}{25}$
$W'=\frac{16W}{25}$