Question

The efficiency of a machine is 60℅,find In joules the work done by a student using the machine to rise a load of 150kg through a vertical distance or 2.5 m (g=10m/s2)

Answer 1

Please help me to solve the problem

Answer 2

work input*.60=work output
work input(.60)=150kg*(9.8N/kg)*2.5m
work input= 150*9.8*2.5/.60

I would Never use g=10m/s^2, as it is not that value anywhere on Earth.

Answer 3

so the answer

Answer 4

physic

Answer 5

Thanks but i need the formular