Question

In case of completely immersed body in water, what is the volume of the body if upthrust is 4 gf?

Answer 1

Answer:

(i) :

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