Physics Efficiency ..

[puregoodboi]

What is efficiency of a crane that uses 5.10 x 10 to the fifth power of energy to lift 1000kg a vertical height of 32.0 m ?

geez what formula do i use lol i tried using the heat energy formula but to no avail T_T someone offer help lol like what formula do i use?

[James R]

Hints:

How much energy is required to lift the mass to the required height?
Efficiency = power needed / power actually used

[puregoodboi]

5.10 x 10 to the fifth power of energy would this be the power actually used?

[James R]

Yes. Well, energy, not power, but you can use the energy to calculate the efficiency in this case. Technically, power is energy per unit time.