Question

A body weigh 70 N in air. It displaces 0.002 m³ of water when fully immersed into water. (Take g = 10 m/s²) and density of water = 1000 kg/m³)
Calculate:
(1) Weight of the water displaced.
(ii) Weight of the object in water.
​

Answer 1

Answer:

According to Archimedes Principle "when a body is fully or partially immersed in a fluid at rest,it appears to lose weight.In other words,

Apparent weight W

′

=W−F

b

where F

b

is buoyancy force which is equal to weight of displaced liquid.

Apparent weight 8N=10N−F

b

F

b

=2N

or the weight of the liquid displaced by the object 2N.