A body floats in a liquid contained in a beaker. If the whole system as shown in figure falls freely under gravity, then the upthrust on the body due to liquid is
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a
Zero
b
Equal to the weight of liquid displaced
c
Equal to the weight of the body in air
d
None of these
answer is A.
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Detailed Solution
Up thrust on the body = vσg. For freely falling, body effective g becomes zero.So up thrust becomes zero.
A body floats in a liquid contained in a beaker. If the whole system as shown in figure falls freely under gravity, then the upthrust on the body due to liquid is