Gravitation Tes...

The acceleration due to gravity about the earth\'s surface would be half of its value on the surface of the earth at an altitude of (R = 4000 mile)

A pendulum clock is set to give correct time at the sea level. This clock is moved to hill station at an altitude of 2500 m above the sea level. In order to keep correct time of the hill station, the length of the pendulum

A solid sphere of uniform density and radius R applies a gravitational force of attration equal to F₁ on a particle placed at P, distance 2 R from the centre O of the sphere. A spherical cavity of radius r/2 is now made in the sphere as shown in Fig. The sphere with cavity now applies a gravitational force F₂ on same particle placed at P. The ratio F₂/F₁ will be

A pendulum is taken inside 1 km from sea level, in one day it,

Two spherical planets A and B have same mass but densities in the ratio 8: 1. For these planets, the ratio of acceleration due to gravity at the surface of A to its value at the surface of B is

If g is the acceleration due to gravity on the earth’s surface, the gain in potential energy of the earth at a height equal to three times the radius R of the earth will be

The correct graph between the intensity of gravitational field (I_G) due to a solid sphere and distance from its centre (r) will be

Select the proper graph between the gravitational potential (V_g) due to hollow sphere and distance (r) from its centre.

An artificial satellite revolves around the earth in a circular orbit with a speed v. If m is the mass of the satellite, its total energy is