A cork is submerged in water by a spring attached to the bottom of a bowl. Then the bowl is kept in an elevator moving with acceleration downwards, the length of spring
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a
Increases
b
Decreases
c
Remains unchanged
d
None
answer is B.
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Detailed Solution
Force of buoyancy decreases FB=Viρlg-aand there is net downward force. So length of spring decreases