Gravitation Tes...

The earth revolves round the sun in one year. If the distance between them becomes double, the new period of revolution will be

The maximum and minimum distances of a comet from the sun are 8 × 10¹² m and 1.6 × 10¹² m. If its velocity when nearest to the sun is 60 m/s, what will be its velocity in m/s when it is farthest ?

The period of moon\'s rotation around the earth is nearly 29 days. If moon\'S mass were 2 fold, its present value and all other things remained unchanged, the period of moon\'s rotation would be nearly

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

The mass of a planet that has a moon whose time period and orbital radius are T and R respectively can written as

In an elliptical orbit under gravitational force, in general

A mass M is split into two parts, m and (M – m), which are then separated by a certain distance. What ratio of m/M maximizes the gravitational force between the two parts ?

Suppose the gravitational force varies inversely as the nth power of distance. Then, the time period of a planet in circular orbit of radius R around the sun will be proportional to

A system of binary stars of masses m_A and m_B are moving in circular orbits of radii r_A and r_B respectively. If T_A and T_B are the times periods of masses m_A and m_B respectively then,

A simple pendulum has a time period T₁ when on the earth\'s surface and T₂ when taken to a height R above the earth\'s surface, where R is the radius of the earth. The value of T₂/T₁ is