With the help of a crane, they lifted a load weighing 2500 kg to a height of 12 m. What kind of work is being done in this case?

Given: m = 2500 kg; S = 12 m; g = 10 N / kg

Find: A -?

Let’s write down the formula we know:

A = F * S

Solving this problem, the main thing is to understand what kind of force F that acts on the load. A this force is equal in magnitude to the force of gravity, that is, F = Fт:

Fт = mg

A = FТ S = 2500 • 10 * 12 = 300 000 J = 300 kJ

Answer: A = 300 kJ

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