Page 29 - Pressure 10 class

Verification of Archimede’s Principle

To verify Archimede's principle, a stone is hung with a hook of s spring balance using string.

A eureka can filled with water and empty beaker on a pan balance are set so that the
overflowed water pours in the beaker. When the stone sinks in water, the water is
displaced and collected in the beaker.

The following observations are recorded;

 Weight of stone in air = W1

 Weight of stone in water = W2

 Weight of empty beaker = W3

 Weight of beaker with displaced water = W4

 Weight lost by stone = W1 – W2

 Weight of displaced water = W4 – W3
From the experiment it can found that,

W1 – W2 = W4 – W3

i.e. Weight lost by stone = Weight of displaced water

i.e. Upthrust = Weight of the displaced water(liquid).

Or, Upthrust = Weight lost by a body.

Therefore the upthrust of water = the weight of the water displaced by the object.

In this way, the Archimede’s Principle is verified.6

July 30, 2020 Taranath Baral/GC Shiba/Suraj Thapaliya 29