Question

What are bouyant forces?

Answer 1

if we merge the solid in the liquid than liquid exert upward and equal force on solid . the force is exerted by water is called buoyant force

Answer 2

Bouyant force refers to the upthrust provided by a fluid when a substance is totally or partially immersed in it.

It is given by,

$F = - \rho g V$, where,

1. F = Bouyant force's magnitude,
2. ρ = Density of fluid,
3. V = Volume of fluid,
4. g = Acceleration due to gravity.

More:-

• Bouyant force is similar to Air resistance.
• The idea of Bouyant force was provided by Archimedes. You can also see the story behind this discovery.

Tricky short question to solve:-

Consider a situation when a man holds a fish in one hand and a bucket (filled with water) in another hand. If he puts the into the bucket, can he observe any change in weight? If yes, he would feel less weight or more?

(Olympiad level)