A man lifted a bucket of water weighing 10 kg from a well 8 m deep in 16 seconds.
| May 19, 2021 | education
A man lifted a bucket of water weighing 10 kg from a well 8 m deep in 16 seconds. What power did he develop at the same time? consider that the bucket moved evenly.
To calculate the value of the power that the person indicated could develop at, it is necessary to use the formula (uniform movement: A = ΔEp): N = A / t = m * g * h / t.
Constants and variables: m – the mass of the used bucket (m = 10 kg); g – acceleration due to gravity (g ≈ 9.8 m / s2); h – lifting height, well depth (h = 8 m); t is the ascent time (t = 16 s).
Calculation: N = m * g * h / t = 10 * 9.8 * 8/16 = 784/16 = 49 W.
Answer: To lift the bucket used, a person developed a power of 49 watts.
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