Question

Let us consider a Boat floating in a river then If a Boat consist of waste of iron pieces say that then iron pieces are 5 kg if we drop one piece of iron into the river then what happens to the level of the water in the river

Answer 1

When the iron pieces were in the boat, the weight of iron were balanced by the buoyant force.

Vidi = Vℓ dℓ

Vℓ, Vi = volue of liquid and iron respectively

dℓ, di= density of liquid and stone respectively

Since, di > dℓ ∴ Vi< Vℓ
Therefore when iron put in water, the level of water falls