What power does the motor of the crane hoist develop if it evenly lifts a slab weighing 600 kg to a height of 4 m in 3 s?

Let’s compose the Law of Conservation of Energy for the given case:
P * t = mgh
Where P is power, mgh is potential energy.
Let us express the power P:
P = mgh / t = 6000 * 4/3 = 8000W



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