Gravitation Tes...

The value of 'g' at a certain height above the surface of the earth is 27% of its value on the earth's surface.The height is : (R=6300 km)

If the gravitational potential on the surface of earth is $$V_0$$ then potential at a point at height half of the radius of earth is

The amount of work done in lifting a body of mass 'm' from the surface of the earth to a height equal to twice the radius of the earth is

At what temperature will the root mean square velocity of oxygen molecule be sufficient so as to escape from the earth?  Escape velocity from the earth is $$11.0\ km/s$$ and the mass of the one molecule of oxygen $$5.34\times 10^{-25}\ kg$$ (Boltzmann constant $$k=1.38\times 10^{-23}\ J/K$$):

The loss in wight of a body taken from earth's surface to a height $$h$$ is 1%. The charge in weight taken into a mine of depth $$h$$ will be

The weights of an object in a coal mine, at the surface and at the top of a mountain at the same piece on the earth are $$W_1, W_2, W_3$$ respectively then 

Rockets are lunched in Eastward direction to take advantage of:

The decrease in trhe value of g on going to a height above the earth's surface will be :-

The height above surface of earth where the value of gravitational acceleration is one fourth of that at surface, will be

A particle of mass $$m_1$$ lies inside a spherical shell of mass $$m_2$$ and radius R at a distance r from the centre. The gravitational potential energy of the system is