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

What is the work done in shifting a body of mass m=5okg slowly from the earth's surface to infinity?

What is the work done in shifting a body of mass m=5okg slowly from the earth's surface to infinity?

Work done in taking a body of mass m to a height nR above surface of earth will be : (R = radius of earth)

Find the kinetic energy needed to project a body of mass m from the surface of earth to infinity.

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 ?

What impulse need to be given to a body of mass m , released from the surface of earth along a straight tunnel passing through centre of earth, at the centre of earth, to bring it to rest. (Mass of earth M, radius of earth R)