Find the power of the engine that lifts a load of 20 kg to a height of 10 m in 20 seconds.
| June 9, 2021 | education
Given: m (mass of the lifted load) = 20 kg; h (lifting height) = 10 m; t (running time of the motor used) = 20 s.
Constants: g (acceleration due to gravity) ≈ 10 m / s2.
To determine the power of the engine used, we apply the formula: N = A / t = ΔEp / t = m * g * h / t.
Calculation: N = 20 * 10 * 10/20 = 100 W.
Answer: The power of the motor used is 100 W.
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