Year: 2019
Topic: Gravitation
Time :
1.
The work done to raise a mass \(m\) from the surface of the earth to a height \(h\), which is equal to the radius of the earth, is
(1). \(\frac{3}{2}mgR\)
(2). \(mgR\)
(3). \(2mgR\)
(4). \(\frac{1}{2}mgR\)