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Question

if a block of wood is floating in a river water, then the apparent weight of the floating block is

A
equal to the weight of the displaced water
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B
zero.
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C
greater than the weight of the displaced water
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D
equal to the actual weight of the block
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Solution

The correct option is B zero.
Apparent weight in calculated as
Apparent weight=(weight of body)(Buoyancy force)
Where
weight of body=(mass of body)×(Gravitational force)
Buoyancy force=weight of fluid displaced
for the floating body:-
weight of body=Buoyancy force
The body floating and
apparent weight equals to zero.
Answer is B.

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