When lifting the body at a constant speed to a height of h = 2 meters, work A = 20J was performed. Find body mass.
| June 20, 2021 | education
Data: the rise of the body is even; h (lifting height) = 2 m; A (perfect work) = 20 J.
Constants: by condition g (acceleration due to gravity) = 10 N / kg.
To find the desired body weight, we apply the formula: A = ΔEp = m * g * h, whence we express: m = A / (g * h).
Calculation: m = 20 / (10 * 2) = 1 kg.
Answer: The lifted body has a mass of 1 kg.
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