If density of a planet is double that of the earth and the radius $1.5$ times that of the earth, the acceleration due to gravity on the surface of the planet is ........
$\frac{3}{4}$ times that on the surface of the earth
$3$ times that on the surface of the earth
$\frac{4}{3}$ times that on the surface of the earth
$6$ times that on the surface of the earth
The angular speed of earth, so that the object on equator may appear weightless, is $(g = 10\,m/{s^2}$, radius of earth $6400\, km$)
Two equal masses $m$ and $m$ are hung from a balance whose scale pans differ in vertical height by $'h'$. The error in weighing in terms of density of the earth $\rho $ is
If mass of a body is $M$ on the earth surface, then the mass of the same body on the moon surface is
Explain the variations of acceleration due to gravity inside and outside the earth and draw the graph.
At what height over the earth's pole, the free fall acceleration decreases by one percent ........ $km$. (assume the radius of earth to be $6400 \,km$)