Question

Why is it easier to lift a heavy stone under water than in air

Answer 1

because in water there exists a buyoncyforce which acts in upward direction
so the net force required to lift the stone is less in water than in air

Answer 2

Hi

Here devil1407

According to Archimedes Principle,When an object is immersed in water it shows loss of it's weight which is equal to the water displaced by the object.

So a heavy stone in water is acted upon the upthrust due to water, which reduces the weight of the stone.

Hope it helps u

Thanx....Bye