A body weighing 54 kg is lifted with a movable block, acting on a rope with a force of 360 N
| August 10, 2021 | education
A body weighing 54 kg is lifted with a movable block, acting on a rope with a force of 360 N. Calculate the efficiency of the installation.
To calculate the efficiency of the installation used, we apply the formula: η = Ap / Az = m * g * h / (F * S) = m * g * h / (F * 2h) = m * g / (2 * F).
Constants and variables: m – mass of the lifted body (m = 54 kg); g – acceleration due to gravity (g ≈ 10 m / s2); F – acting force (F = 360 N).
Calculation: η = m * g / (2 * F) = 54 * 10 / (2 * 360) = 0.75 or 75%.
Answer: The efficiency of the used installation is 75%.
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