Given mass of the moon is 1/81 of the mass of the earth and corresponding radius is 1/4 of the earth. If escape velocity on the earth surface is 11.2 km/s, the value of same on the surface of the moon is Read More »
Two bodies of masses m1 and m2 are initially at rest at infinite distance apart. They are then allowed to move towards each other under mutual gravitational attraction. Their relative velocity of approach at a separation distance r between them is Read More »
If the value of ‘g’ acceleration due to gravity, at earth surface is 10 m/s^2, its value in m/s^2 at the centre of the earth, which is assumed to be a sphere of radius ‘R’ metre and uniform mass density is Read More »
