What will be the formula of mass of the earth in terms of $g, R$ and $G$ ?

If the earth stops rotating, the value of $‘g’$ at the equator will

The height at which the acceleration due to gravity becomes $\frac{g}{9}$ (where $g$ = the acceleration due to gravity on the surface of the earth) in terms of $R$, the radius of the earth, is

A satellite revolves in the geostationary orbit but in a direction east to west. The time interval between its successive passing about a point on the equator is ........ $hrs$

The maximum vertical distance through which a fully dressed astronaut can jump on the earth is $0.5\, m$. If mean density of the moon is two-thirds that of the earth and radius is one quarter that of the earth, the maximum vertical distance through which he can jump on the moon and the ratio of time of duration of jump on the moon to that on the earth are

The mass of moon is $7.34 \times {10^{22}}\,kg$ and radius of moon is $1.74 \times {10^6}\,m$ then The value of gravitation accelaration will be ....... $N/kg$