Gravitation Tes...

What is the intensity of gravitational field at the centre of a spherical shell ?

The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is

In some region, the gravitational field is zero. The gravitational potential in this region

A particle falls towards earth from infinity. It\'s velocity on reaching the earth would be

The escape velocity of a particle of mass m varies as

For the moon to cease to remain the earth\'s satellite, its orbital velocity has to increase by a factor of

The escape velocity of an object on a planet whose g value is 9 times on earth and whose radius is 4 times that of earth in km/s is

The escape velocity of a projectile on the earth\'s surface is 11.2 kms^–1 . A body is projected out with thrice this speed. The speed of the body far away from the earth will be

Escape velocity on the earth

If acceleration due to gravity on the surface of a planet is two times that on surface of earth and its radius is double that of earth. Then, escape velocity from the surface of that planet in comparison to earth will be