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A lift starts going up from rest, it acceleration is shown in fig, plotted against time. Time when lift comes to instantaneous rest is .. A. 4 secB. 8 secC. 10 secD. 12 sec

Answer» Area a-t curve give `DeltaV`
`1xx4=(t-8)xx2`
`4=2t-16`
`t=10` sec.


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