Gravitation Tes...

A shell of mass M and radius R has a point mass m placed at a distance r from its centre. The gravitational potential energy U(r) –v will be

If V_e and V_o are represent the escape velocity and orbital velocity of satellite corresponding to a circular orbit of radius r, then

If r represents the radius of the orbit of a satellite of mass m moving around a planet of mass M, the velocity of the satellite is given by

Two satellites of mass m₁ and m₂ (m₁ > m₂) are revolving round the earth in circular orbits of r₁ and r₂ (r₁ > r₂) respectively. Which of the following statement is true regarding their speeds V₁ and V₂

The centre of earth in new orbit is two times of the earlier orbit. The time period in second orbit is .........hours.

As astronaut orbiting the earth in a circular orbit 120 km above the surface of earth, gently drops a spoon out of space-ship. The spoon will

The period of a satellite in cirular orbit around a planet is independent of

Two satellites A and B go round a planet p in circular orbits having radii 4 R and R respectively if the speed of the satellite A is 3V, the speed if satellite B will be

A small satellite is revolving near earth’s surface. Its orbital velocity will be nearly = ..........kms^–1.

A satellite revolves around the earth in an elliptical orbit. Its speed