Mass of moon is $7.34 \times {10^{22}}\,kg$. If the acceleration due to gravity on the moon is $1.4\,m/{s^2}$, the radius of the moon is $(G = 6.667 \times {10^{ - 11}}\,N{m^2}/k{g^2})$
$0.56 \times {10^4}\,m$
$1.87 \times {10^6}\,m$
$1.92 \times {10^6}\,m$
$1.01 \times {10^8}\,m$
A body weighs $63\; N$ on the surface of the earth. What is the gravitational force (in $N$) on it due to the earth at a height equal to half the radius of the earth ?
At what distance above and below the surface of the earth a body will have same weight, (take radius of earth as $R$.)
If the radius of the earth be increased by a factor of $5,$ by what factor its density be changed to keep the value of $g$ the same ?
A body weighs $72 N$ on surface of the earth. When it is taken to a height of $h=2 R$, where $R$ is radius of earth, it would weigh ........ $N$
Give the value of acceleration due to gravity at height $12\, km$ from the surface of earth.