Gravitation Tes...

A Gravitational force between two masses at a distance $$' d '$$ apart is $$6\ N.$$ If these masses are taken to the moon and kept at same separation, then the force between them will be.

The acceleration due to gravity on the surface of a planet, which has both mass and radius half of those of the earth is:

Two object are placed at some distance, if their masses become two times and distance between them becomes half then value of new gravitational force will be :

A freely falling body:

Two bodies of masses $${m_1}$$ and $${m_2}$$  are placed at distance X from each other. If X is kept constant and the masses of the two bodies are increased to $${2m_1}$$, and $${2m_2}$$, then the value of gravitational force between them will become

A fruit (mass $$= 50 g$$) falls from a tree because of gravitational attraction between the earth and the fruit. Which of the following statements is true if x is the force exerted by the earth on the fruit and y is the force exerted by the fruit on the earth?

The weight of an object on earth is 800 N. If it were taken to the moon, it would weight 100N. What is its mass on the moon? (Acceleration due to gravity on earth = 10 ms$$^{-2}$$)

An object placed on the ground has a gravitational force of $$160$$ N acting on it. What is the weight of the object? ($$ {g= 10 m/s^2}$$ )

A jet plane flies in air because 

If the mass of a body on the surface of the earth is $$50\ kg$$, its mass at the centre of the earth is: