Gravitation Tes...

A man weighs $$600\ N$$ on earth. What would be his approximate weight on moon? 

The force of attraction between two bodies at a certain separation is $$10  N$$. What will be the force of attraction between them if the separation between them is reduced to half?

A man first swims in sea water and then in river water. Compare the weights of sea water and river water displaced by him.

What force and weight act on a mass of $$10.5 kg$$ being pulled by earth? Take $$g=10  m  {s}^{-2}$$.

An artificial satellite orbiting the earth does not fall down because of the earth's attraction

The weight of a body on earth is $$98  N$$ where acceleration due to gravity is $$9.8  \ m  {s}^{-2}$$. What will be its weight on the moon where acceleration due to gravity is $$1.6  \ m  {s}^{-2}$$?

The ratio: $$\dfrac{g_{Earth}}{g_{Moon}}$$ is equal to:

A rectangular box is kept over a table with different faces touching the table. In different cases, the block exerts

Ships and submarines works on the principle/law of 

If $$M$$ is the mass of the earth and $$R$$ its radius, the ratio of the gravitational acceleration and the gravitational constant is: