Briefly explain how can Archimedes' principle be verified experimentally?
Or
Describe a simple activity to show that a body loses weight when immersed in a fluid.
Archimedes principle can be explained experimentally.
Look at the fig. below.
Fig. 10.22. Verification of Archimedes' principle.
i) Take an overflow can and fill it with water.
ii) Hang a piece of stone on spring balance.
iii) Weigh the piece of stone hung from the spring balance.
iv) Take a beaker and weigh it.
v) Place the beaker below the spout of the overflow can.
vi) Immerse the stone in the overflow can and collect the water which overflows and read the weight of stone when it is immersed in water.
vii) We find that, the weight of stone in water is less than the weight of stone in air.
viii) Now weigh the beaker with the water.
ix) It is observed that the loss in weight of the stone is equal to the weight of the water collected in the beaker, i.e., the weight of the water displaced.
Hence, Archimedes principle is proved.
