Consider earth to be a homogeneous sphere. Scientist `A` goes deep down in a mine and Scientist `B` goes high up in a balloon. The gravitational field measured by

Consider the earth to be a homogeneous sphere. Scientist A goes deep down in a mine and scientist B goes high up in a balloon. The gravitational field measured by

.Consider the earth to be a homogeneous sphere. Scientist ‘A’ goes deep down in a mine and scientist. ,B’ goes up in a ballon. The gravitational field measured by

Cosider earth to be a homogeneous sphere. Scientist A goes deep down in a mine and scientist B goes high up in a bollon. The value of g measured by

Cosider earth to be a homogeneous sphere. Scientist A goes deep down in a mine and scientist B goes high up in a bollon. The value of g measured by

Two persons A and B are trying to measure the value of acceleration due to gravity (g) of the earth. A goes high up in a ballon while B goes down in a mine. The value of 'g' measured by

A fixed sphere of radius R and uniform density rho has a spherical cavity of radius R//2 such that the surface of the cavity passes through the centre of the sphere. A particle of mass m is located at the centre (A) of the velocity. Calculated (a) The gravitational field at A . (b) The velocity with which the particle strikes the centre O of the sphere. (Neglect earth's gravity)

Read the paragraph and answer the following question: You must be knowing about the high and low tides that occur regularly in the sea. The level of the sea water at any given location along sea shore increases and decreases twice a day at regular intervals. High and low tides occur at different times at places. The level of water in sea changes because of the gravitational force exerted by the moon. Water directly under the moon gets pulled towards the moon and the level of water there goes up causing high tide at that place. At two places on the earth at 90^(@) from the place of high tide, the level of water is minimum and low tides occur there. Where is high tide and low tide caused?