The forklift lifts a 400 kg load to a height of 1.2 m in 2 seconds. Calculate the perfect work and power of a forklift truck

To calculate the values ​​of the work performed by the forklift used and its capacity, we use the formulas: A = m * g * h and N = A / t.

Variables: m is the mass of the load lifted by the forklift (m = 400 kg); g – acceleration due to gravity (g ≈ 10 m / s2); h – lifting height (h = 1.2 m); t is the duration of the used fork-lift truck (t = 2 s).

Calculation: a) Work of a forklift truck: A = m * g * h = 400 * 10 * 1.2 = 4.8 * 10 ^ 3 J = 4.8 kJ;

b) Forklift power: N = A / t = 4.8 * 10 ^ 3/2 = 2.4 * 10 ^ 3 W = 2.4 kW.

Answer: The work performed is 4.8 kJ; the power of the used forklift is 2.4 kW.