Gravitational force acts on all objects in proportion to their masses. Why, then, does not a heavy object fall faster than a light object?
If F be the gravitational force on a body of mass m, then
Clearly, F ∝ m but g does not depend on m. Hence, all bodies fall with the same rapidness when there is no air resistance.
What do you mean by buoyancy?
When does an object float or sink when placed on the surface of water?
How does the force of gravitation between two bodies change when the distance between them is reduced to half?
What is the magnitude of the gravitational force between the earth and 1 kg object on its surface? (Mass of the Earth = 6 x 104 kg and radius of earth is 6.4 x 106 m)
