Question

Derivation of the formula of upthrust ....

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Answer 1

How can we derive the formula of upthrust? ... Upthrust is a kind of force which always acts in upward direction right? And, we know, Force = Pressure × Area. In this case, the pressure is extended on a body by a liquid and hence the pressure will be liquid pressure.

Answer 2

Explanation:

Now,

F 1= p1 x A = h1 dg A

F2 = p2 x A X h dgA

upthrust = f2 - f1

U = dgA ( h2 - h1)

Proved