Question

the weight of an object in water is 3N and that in air 2N.what will be the buoyant force?​

Answer 1

Answer:

buoyant force = weight in air - weight in water

= 2-3

buoyant force =-1N

that's your answer

by the way

buoyant force is the upward force that acts on an object when immersed in a fluid

Answer 2

Explanation:

Given,

Weight of body in water is

3

1

of total weight in air,

Mean, buoyancy force in water is

3

2

of total weight in air

Volume of body, V

Density of water & body, ρ

w

& ρ

b

Apply Archimedes principle

Buoyancy force = weight of water displaces =

3

2

weight of body in air

ρ

w

Vg=

3

2

ρ

b

Vg

ρ

b

=1.5ρ

w

Density of body is 1.5 time the density of water.

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