A body floats in a liquid contained in a beaker. The whole system as shown in Fig.(B) falls freely under gravity. The upthrust on the body due to the liquid is:
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a
zero
b
equal to the weight of the liquid displaced
c
equal to the weight of the body in air
d
equal to the weight of the immersed portion of the body
answer is A.
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Detailed Solution
Upthrust force =volume×density of liquid ×acceleration due to gravity . If the system is falling freely then g=0,so upthrust force is also zero
A body floats in a liquid contained in a beaker. The whole system as shown in Fig.(B) falls freely under gravity. The upthrust on the body due to the liquid is: