How much energy is needed to move a body of 103 kg mass from Earth's surface to a height of 2RE?(RE=radius of Earth=6400 km)
The gravitational potential energy of a body of mass 'm' at the earth's surface −mgRe. Its gravitational potential energy at a height Re from the earth's surface will be (Here Re is the radius of the earth)
A body of mass m is situated at a distance 4Re above the earth's surface, where Re is the radius of the earth. How much minimum energy should be given to the body so that it may escape?