Question

A person carrying a load of 20KG climbs up 4m in 10s. Calculate the work done and his power. (g=10m/s^2)

Answer 1

Hey!

________________________

Mass of the load= 20kg
Distance climbed= 4m
Time= 10s
Gravity= 10 m/s^2


Work done=?
Power=?

Work done= Potential energy= mgh

W.D = mgh
W.D= 20×10×4
W.D= 200×4
W.D= 800 J

Power= mgh/t
P= mgh/t
P= 800/10
P= 80 W

________________________

Hope it helps...!!!