Question

How much upthrust is exerted on the stone in air​

Answer 1

Explanation:

When a body is partly or totally immersed in a fluid there is an upthrust that is equal to the weight of fluid displaced. Upthrust = apparent loss of weight of object = weight in air - weight in liquid.

Answer 2

Answer:

If the upthrust on the object is bigger than its weight the object rises, some of it comes out of the water until the upthrust is equal to its weight and the object floats. If the upthrust on the object is smaller than its weight the object sinks to the bottom of the liquid.