Gravitation Tes...

Body is projected vertically upward from the surface of the earth with a velocity equal to half the escape velocity. If $$R$$ is radius of the earth, the maximum height attained by the body is :-

How much above the surface of earth does the acceleration due to gravity reduce by 36% of its value on the surface of earth? (radius of earth 6400 km)

Velocity of water in a river is

Calculate the escape velocity for an atmospheric particle 9600 km above the earth 's surface , given acceleration due to gravity on the surface of earth is 10 $$ms^{ -2 }$$. 

The weight of a body at a distance 2R from the centre of earth of radius R is 2.5 N. If the distance is 3R from the centre of earth the weight of the body will be --------

A body weight W newton at the surface of the each, In weight at a height at a equal to half the radius of the earth will be:

Let $$g$$ be the acceleration due to gravity at earth's surface and $$K$$ be the rotational kinetic energy of the earth Suppose the earth's radius decreases by $$2$$% keeping all other quantities same, then 

The escape velocity for a body of mass 1 kg from the earth surface is $$11.2 kms^{-1}$$. The escape velocity for a body of mass $$100 kg$$ would be 

A tunnel is dug along the diameter of the earth. There is a particle of mass m at the centre of the tunnel. Find the minimum velocity given to the particle so that just reaches to the surface of the earth. (R=radius of earth)

An aeroplane is moving with constant horizontal velocity u at height h. The velocity of a packet dropped from aeroplane, when it reaches on the earth's surface will be (g is acceleration due to gravity)