The orbital angular momentum of a satellite revolving at a distance 'r' from the centre of Earth is 'L'. If the distance is increased to '16 r', what will be the orbital angular momentum?

The time period of a satellite of Earth is 5 hours. If the separation between Earth and the satellite is increased to 4 times the previous value, the new time period will become

In order to shift a body of mass 'm' from a circular orbit of radius '3R' to a higher orbit of radius '5R' around Earth, where 'R' is radius of Earth; the work done is:

Kepler's second law states that the straight line joining a planet to the sun sweeps out equal areas in equal time. This statement is equivalent to the statement that

Two bodies A and B have masses 'M' and 'm' respectively, where M > m, and they are at a distance 'd' apart. Equal forces are applied to them so that they approach each other. The position where they hit each other is

Two satellites of Earth, S₁ and S₂, are moving in the same orbit. The mass of S₁ is four times the mass of S₂. Which of the following statements is true?

The mass of the moon is 1/12 Me. If the acceleration due to gravity on the moon is g/6, then its radius is

A satellite, which is geostationary in a particular orbit, is taken to another orbit. Its distance from the centre of Earth in the new orbit is two times that of the earlier orbit. The time period of the satellite in the second orbit is

What would be the angular velocity of earth in radian per second, if the weight of a body at equator becomes zero?