1.

Why does the stone lose weight when it is immersed?

Answer»
  • Suspend a stone from a spring balance. Note the reading of the spring balance. 
  • Take a beaker half-filled with water. 
  • Now immerse the stone in the water, note the reading of the spring balance. 
  • We notice that the stone, when immersed appears to lose some weight. 
  • The immersed stone appears to lose weight because the force of buoyancy.
  • Thus the apparent loss of weight must be equal to the force of buoyancy acting on the immersed stone.


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