A planet has mass and radius

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A planet has mass

4.0\times10^{24}\,\text{kg}

and radius

6.0\times10^{6}\,\text{m}

. Find the gravitational potential difference

V(3R)-V(2R)

, where

R

is the planet’s radius. (a)

-7.4\times10^{6}\,\text{J kg}^{-1}

(b)

+2.2\times10^{7}\,\text{J kg}^{-1}

(c)

+7.4\times10^{6}\,\text{J kg}^{-1}

(d)

+4.4\times10^{7}\,\text{J kg}^{-1}