A body of mass m kg falling from a distance 3R above the earth's surface. What is its kinetic enrgy when it reaches a distance 'R' above the surface of the earth of radius R and mass M ?

A body of mass m kg starts falling from a distance 2R above the earth's surface. What is its kinetic energy when it has fallen to a distance 'R' above the earth's surface ? (where R is the radius of Earth)

A body of mass m kg starts falling from a point 2R above the earth's surface. Its kinetic energy when its has fallen to a point 'R' above the earth's surface [R Radius of earth M-mass of earth, G-gravitational constant]

For two saatellitw at distance R and 7R above the earth's surface, the ratio of their

The value of g varies with distance (r ) above the earth 's surface as

What is the workdone in bringins a body of mass m from infinity to the surface of Earth of radius R and mass m ?

A body of 200 kg wt is lying in the surface the earth. Find its weight at a place 'R' above the surface of the earth (Radius of the earth is R),

A body of mass m is thrown from a equal to radius of earth (R) from earth's surface. The change in potential energy when it reaches to a height equal to 2R from earth's surface is

If a man weighs 90 kg on the surface of the earth, the height above the surface of the earth of radius, R where the weight is 30 kg is

If acceleration due to gravity at distance d [ < R ] from the centre of earth is beta , then its value at distance d above the surface of earth will be [ where R is radius of earth ]