The crane, whose engine power is 15 kW, evenly lifts the load at a speed of 1.5 m / s, determine the mass of the load.

univerkov | September 1, 2021 | education

Given: N (motor power of the crane used) = 15 kW (15 * 103 W); V (constant speed of the lifted load) = 1.5 m / s.

Constants: g (acceleration due to gravity) ≈ 10 m / s2.

To determine the mass of a uniformly lifted load, we use the formula: N = F * V = m * g * V, whence m = N / (g * V).

Let’s make a calculation: m = 15 * 10 ^ 3 / (10 * 1.5) = 1 * 103 kg (1 ton).

Answer: The mass of a uniformly lifted load is 1 ton.

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