A body floats in liquid contained in a beaker. If the whole system (shown in figure) falls under gravity then the up-thrust on the body is:

2 m g

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z e r o

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m g

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< m g

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Solution

The correct option is B $z e r o$
there is only one force which can act in free fall and that is gravity hence there is zero reaction force or up thrust force.

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A body floats in liquid contained in a beaker. If the whole system (shown in figure) falls under gravity then the up-thrust on the body is:

The correct option is B zerothere is only one force which can act in free fall and that is gravity hence there is zero reaction force or up thrust force.

The correct option is B $z e r o$
there is only one force which can act in free fall and that is gravity hence there is zero reaction force or up thrust force.