To find the value of the lifting height of the load, we apply the formula: A = mg * g * h, from where we express: h = A / (mg * g).
Variables and constants: A – work performed by the used truck crane (A = 22.5 kJ = 22.5 * 10 ^ 3 J); mg is the mass of the lifted load (mg = 1.5 t = 1.5 * 10 ^ 3 kg); g – acceleration due to gravity (g ≈ 10 m / s2).
Calculation: h = A / (mg * g) = 22.5 * 10 ^ 3 / (1.5 * 10 ^ 3 * 10) = 1.5 m.
Answer: The truck crane used had to lift the load to a height of 1.5 m.
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