Question

A monoblock is used to lift 1000kg of water to a tank at height of 60m in 2 minutes
Find work done, potential energy and power

Answer 1

mass of the object=1000kg

time taken=1 min(60sec)

height attained =10 m

velocity attained= 10 m/s

∴ kinetic energy in the body 

E= 1/mv^2

E=1/2*1000*10^2

E=500*100

E=50000 J

∴power=energy/time

P=50000/60

P=833.3 W

∵ 1 W= 746 H.P

∴833.3W=746**833.3

             =621641.8

the answer is 62164.8 W or 62.1648 kW.

         i hope that this will help u..............^_^