Question

man of mass 50 kg takes packet of mass 20kg up to the trace of a building of height 14 watt from the ground level take cheek word 10 metre per second​

Answer 1

Answer:

Totalmassm=50+20=70

heighth=20×0.2=4m

workdone=mgh=70×10×4

=2800

Answer 2

Answer:

A person of mass 50kg carrying a load of 20kg walks up to a staircase. If the width and height of each step are 0.25m and 0.2m respectively, the work done by the man in walking up 20 steps is, (g=10ms(−2) ).