Question

a machine raise a load of 100N through a height of 8m in 5 s the power at which the machine work is​

Answer 1

Power*time=energy

 

therefore power= energy/time

potential energy=mgh

=750*16*10

=120000J

time= 5sec 

therfore power = 120000J/5sec = 24000 J/sec or 24000w

There fore the power is equal to 24KWH or 24000W or 24000J/Sec

Hope This Helps

Answer 2

WEIGHT=100 N

mg=100

h=8 m

t=5 sec

work=(mg)h

work=(100)(8)

work=800 J

power=work/time

power=800/5

power=160 watt