The percentage decrease in the weight of a body when taken to a height of $48 \text{ km}$ above the surface of the earth is (Radius of the earth is $6400 \text{ km}$) (in $\%$)

At which location,the equator or the poles of the Earth,is the value of acceleration due to gravity $g$ higher? Why?

The ratio of the weights of a body on the Earth's surface to that on the surface of a planet is $9 : 4$. The mass of the planet is $\frac{1}{9}^{th}$ of that of the Earth. If $R$ is the radius of the Earth,what is the radius of the planet? (Assume the planets have the same mass density)

The radii of two planets are respectively $R_1$ and $R_2$ and their densities are respectively $\rho_1$ and $\rho_2$. The ratio of the accelerations due to gravity at their surfaces is

If the mass of the planet is $10\%$ less than that of the earth and the radius is $20\%$ greater than that of the earth,the acceleration due to gravity on the planet will be

Suppose that the force of earth's gravity suddenly disappears,choose the correct answer out of the following statements.