A sphere of mass 40 kg is being attracted by another sphere of mass 80 kg with aforce equal to `1//4` of a milligram weight their centres are 30 cm apart. Calculate the value of G.

A sphere of mass 25 kg attracts another sphere of mass 24kg with a force of 0.1 milligram weight. if distance between the centres of two sphere is 20 cm, what is the value of G ?

A spherical mass of 20 kg lying on the surface of the Earth is attracted by another spherical mass of 150 kg with a force equal to 0.23 mg f . The centres o fthe two masses are 30 cm apart. Calculate the mass of the Earth. Radius of the Earth is 6 xx 10^(6)m .

A sphere of mass 20 kg is attached by another sphere of mass 10 kg when their centres are 20 cm apart , with a force of 3.3 xx 10^(-7) N . Calculate the constant of gravitation .

A sphere of mass 40 kg is attracted by a second sphere of mass 15 kg , when their centres are 20 cm apart, with a force of 0.1 miligram weight. Caculate the value of gravitational constant.

A sphere of mass 40 kg is attracted by a second sphere of mass 60 kg with a force equal to 4 mg . If G = 6 xx 10^(-11) N m^(2) kg^(-2) , calculate the distance between them. Acceleration due to gravity = 10 ms^(-2).

A body of mass 30 kg attracts another body of mass 20 kg with force F. Find the value of F if distance between the centres of two bodies is 30 cm.

Calculate the force of attraction between a sphere of mass 40 kg and another sphere of mass 80 kg with their centres 30 cm apart.

The force of attraction between two balls each of mass 1 kg when their centres are 10 cm apart is ……..

A sphere of mass 2kg strikes another sphere of mass 3kg at rest with a velocity of 5ms^(-1) .If they move together after collision, then common velocity is