Gravitation Tes...

A particle of mass m is placed at the centre of a uniform spherical shell of mass 3m and radius R. The gravitational potential on the surface of the shell is

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

Two satellites of masses m₁ and m₂ are revolving around the earth in circular orbit of radii r₁ and r₂. The ratio of their orbital velocities v₁ /v₂ is

The ratio of the K.E. required to be given to the satellite to escape earth’s gravitational field to the K.E. required to be given so that the satellite moves in a circular orbit just above earth’s atmosphere is

An artifical satellite is orbiting at a height of 1800 km from earth’s surface. The earth’s radius is 6300 km and g = 10 m/s² on its surface. What is the radial acceleration

The Radii of the circular orbits of two satellites around the earth are in the ratio 1 : 4 then the ratio of their respective periods of revolution is

An earth satellite of mass m revolves in a circular orbit at a height ‘h’ from the surface of earth. If R is radius and g is the acceleration due to gravity. The velocity of satellite in orbit is

A planet moves around the Sun. At a point P, it is closed to the Sun at a distance d₁, and has speed v₁. At another point Q, when it is farthest from the Sun at a distance d₂, its speed will be

A satellite of mass m is revolving round the earth at a height R above the surface of the earth. If g is the gravitational field intensity at the earth’s surface and R is the radius, the K.E. of the satellite will be :