Question

When the weight of a body is greater than the weight of the liquid displaced, the body will
(a) float
(b) sink
(c) float partially outside
(d) first go down then come up

WhatsApp

Answer

(b) sink

Reason — Two forces act on a body immersed in a liquid:

  1. weight of the body acting vertically downwards and
  2. upthrust acting vertically upwards.

Upthrust is equal in magnitude to the weight of the liquid displaced. When weight of a body is greater than the weight of the liquid displaced, implies downwards force is more than the upwards force, hence the body sinks.

Was this answer helpful?

Didn't liked the above answer ?

≫ Some Related Questions

Upthrust in Fluids

A weather forecasting plastic balloon of volume 15 m3 contains hydrogen of density 0.09 kg m-3. The volume of an equipment carried by the balloon is negligible compared to it’s own volume. The mass of the empty balloon alone is 7.15 kg. The balloon is floating in air of density 1.3 kg m-3. Calculate : (i) the mass of hydrogen in the balloon, (ii) the mass of hydrogen and balloon, (iii) the total mass of hydrogen, balloon and equipment if the mass of equipment is x kg, (iv) the mass of air displaced by balloon and (v) the mass of equipment using the law of floatation.

Open Answer »