A bucket with sand weighing 200n is lifted by means of a fixed block to a height of 10m. acting on the rope with
| April 2, 2021 | education
A bucket with sand weighing 200n is lifted by means of a fixed block to a height of 10m. acting on the rope with a force of 250n. calculated the efficiency of the fixed block.
Initial data: P (weight of a bucket of sand) = 200 N; h (the height to which the sand bucket was raised) = 10 m; F (force with which they act on the rope) = 250 N; a bucket of sand is lifted with a fixed block (it does not give a gain in strength, it only changes its direction).
The efficiency of the fixed block is determined by the formula: η = Ap / Az = P * h / (F * h) = P / F.
Calculation: η = 200/250 = 0.8 (80%).
Answer: The efficiency of the fixed block is 80%.
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