What is the power of the crane engine, which can lift a load weighing 5 tons to a height of 50 m in a time equal to 1 minute?

To calculate the power value of the engine of the specified crane, you must use the formula: N = A / t = m * g * h / t.

Variables and constants: m – mass of the lifted load (m = 5 t = 5 * 10 ^ 3 kg); g – acceleration of gravity (g = 9.81 m / s2); h – height (h = 50 m); t is the duration of the engine operation (t = 1 min = 60 s).

Calculation: N = m * g * h / t = 5 * 10 ^ 3 * 9.81 * 50/60 = 40.875 * 10 ^ 3 W ≈ 41 kW.

Answer: The motor power of the above crane is 41 kW.