Question
Sat July 30, 2011 By:

what is upthrust and archimedes principle?

Expert Reply
Mon August 01, 2011
Upthrust: It is a force that pushes an object up and makes it seem to lose weight in a fluid.
The upthrust keeps ships afloat, and keeps swimmers on top of the water.
 
Archimedes' Principle: It states that when a body is immersed partially or wholly in a liquid at rest, it experiences an upthrust which is equal to the weight of the liquid displaced. The apparent loss in weight of the body is equal to the upthrust on the body.
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