A porter lifts a heavy suitcase of mass \(80 \mathrm{~kg}\) and at the destination lowers it down by a distance of \(80 \mathrm{~cm}\) with a constant velocity. Calculate the work done by the porter in lowering the suitcase.
(take \(\mathrm{g}=9.8 \mathrm{~ms}^{-2}\) )

[JEE Main 2021, 22 Jul (Shift 2)]

Question

A porter lifts a heavy suitcase of mass \(80 \mathrm{~kg}\) and at the destination lowers it down by a distance of \(80 \mathrm{~cm}\) with a constant velocity. Calculate the work done by the porter in lowering the suitcase.
(take \(\mathrm{g}=9.8 \mathrm{~ms}^{-2}\) )

[JEE Main 2021, 22 Jul (Shift 2)]

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