Question

consider a small volume v of water enclosed in a very thin plastic bag of negligible mass and placed well within the a large tank of water (a)what are the forces acting on the water in plastic bag(b)what is their mutual relation? density of water is p

Answer 1

1. force from inside the bag due to water molecules hitting the bag
2. force from outside due to the same water molecules hitting from outside

these forces cancel each other

3. Weight of the water inside the bag