Prove that if the earth attracts two bodies placed at the same distance from the centre of earth with equal force, then their masses will be the same.

Why does a body becomes weightless at the centre of earth ?

A rocket is fired from the earth towards the sun. At what distance from the earth’s centre is the gravitational force on the rocket zero ? Mass of the sun = 2xxl0^30 kg , mass of the earth = 6xxl0^24 kg . Neglect the effect of other planets etc. (orbital radius = 1.5 xx 10^11 m ).

What is the mass of a bdy of 5 kg at the centre of earth?

An object of mass m is raised from the surface of the earth to a heigt equal to the radius of the earth , that is, taken from a distance R to 2R from the centre of the earth. What is the gain in its potential energy?

A body is taken from the centre of the earth to the top of the mountain ,how does its weight change?

What will be the weight of a body at the centre of the earth?