Question

A block of volume 10cm^3 is immersed in a liquid of density 100g/cm^3. Calculate the bouyant force acting on it.

Answer 1

Since the block is immersed in a liquid so the volume of liquid came out must be equal to the volume of the block that is 10cm^3.

and we also know that bouyant force is equal to weight of liquid displaced so the weight of liquid displaced will be equal to the
volume come out ×density.
[ since
density = mass ÷ volume]
10 × 100
1000 gm
so the buoyant force = 1000 dyne
[ dyne is the cgs unit of force]