10. Gravitation question bank (Physics)

The ratio of energy required to raise a satellite of mass '$m$' to a height '$h$' above the earth's surface to that required to put it into the orbit at the same height is $[R = \text{radius of the earth}]$

Three point masses,each of mass $m$,are kept at the corners of an equilateral triangle of side $L$. The system rotates about the center of the triangle without any change in the separation of masses during rotation. The period of rotation is directly proportional to