If in a Tub a sinker is sinked with an object of greater volume along with it. Is the upward force is still same when the sinker is sinked individually ?? Why so?

Asked by Nikson Panigrahi | 11th Mar, 2011, 12:00: AM

Expert Answer:

Dear student,
Objects appear to be less heavy in water or in any liquid because the liquid or water exerts an upward force on the objects immersed in it. 

We know that when an iron nail is placed on the surface of water it sinks whereas ship made up of iron floats. This is because size or volume of the ship is more.

Similarly when an iron nail and a cork of some mass is placed on water, the iron nail sinks because the density of iron nail is more than the density of water and whereas density of the cork is less than that of the water. Thus if the density of the liquid is more than the density of the material of the body then the body floats due to the buoyant force exerted by it and vice-versa.

From the above examples we can infer that the buoyant force experienced by a body when submerged in a liquid depends on the volume of the body and the density of the liquid.

Hope this was useful.

Answered by  | 10th Mar, 2011, 10:30: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.