If V is the gravitational potential on the surface of the ea... | Physics | SolveeIt | Solveeit

Today, August 18

Question

If V is the gravitational potential on the surface of the earth, then what is its value at the centre of earth?

A

zero

B

2V

C

3V

D

$\frac{3}{2}V$

Answer

$\frac{3}{2}V$

Explanation

Solution

At centre,
$V_{c}=-\frac{3}{2} \frac{G M}{R}$ , on surface $V=-\frac{G M}{R}$
$\therefore V_{c}=\frac{3}{2} V$