1.

calculate the amount of work don in taking a packet of mass 100 kg to the top of a building of height 14 m . take g = 10 m/s

Answer» GIVEN that ,
 m = 100kg
height ( H ) = 14m
g = 10 m/s
work done = ?
W = mgh
    = 100 * 14 * 10 
    = 14000 joules


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