A porter lifts a heavy suitcase of mass 80   kg and at the destination lowers it down by a distance of 80   cm with a constant velocity. Calculate the work done by the porter in lowering the suitcase. (take g = 9 . 8   ms - 2 )

Question

A porter lifts a heavy suitcase of mass 80 &#160; kg and at the destination lowers it down by a distance of 80 &#160; cm with a constant velocity. Calculate the work done by the porter in lowering the suitcase. (take g = 9 . 8 &#160; ms - 2 )

Aicharya · Accepted Answer

W Porter &#160; + W mg = &#916;K . E . = 0 &#160; W Porter &#160; = - W mg = - m g h = - 80 &#215; 9 . 8 &#215; . 8 = - 627 . 2 &#160; J

A porter lifts a heavy suitcase of mass 80   kg and at the destination lowers it down by a distance of…

Solution

A porter lifts a heavy suitcase of mass 80 &#160; kg and at the destination lowers it down by a distance of…

Solution

A porter lifts a heavy suitcase of mass 80 kg and at the destination lowers it down by a distance of…