Question

A boy is carrying a bucket of water in one hand and a piece of plaster in the other. After transferring the plaster piece to the bucket (in which it floats) the body will carry

• A. same load as before
• B. more load than before
• C. less load then before
• D. either less or more load, depending on the density of the plaster.

Answer 1

The correct option is A same load as before

The boy will carry same load as before.

When boy transfer plaster to water, even though plaster floats, it apply weight on water which will be managed by buoyant force. Consider this force as action, now water is acted upon by reaction.

So, overall force on bucket is weight of water+ reaction

this equals initial weight on boy.

So, Option A is correct.