Question

The mass of an object is 3.5 kg. Its relative density is 3, the apparent loss of weight of it in water is ...​

Answer 1

Volume of body is equal to the volume of water displaced.

V

b

=V

w

=1000 cm

3

=0.001 m

3

(ii) :

Upthrust B=V

b

ρ

w

g=0.001×1000×10=10 N

(iii) :

True weight W=3.5×10=35 N

Apparent weight W

a

=W−B=35−10=25 N or 2.5 kg

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Answer 2

Answer:

Apparent loss of weight is 2.5 kg