With the help of the movable block, lift a load weighing 1750 N. The weight of the block is 50N.
| June 23, 2021 | education
With the help of the movable block, lift a load weighing 1750 N. The weight of the block is 50N. Determine the efficiency of the unit. Disregard friction.
These tasks: P1 (weight of the lifted load using the movable block) = 1750 N; P2 (block weight) = 50 N; friction is not taken into account.
The efficiency of the mobile unit under consideration can be calculated by the formula (it must be borne in mind that the mobile unit will not give a gain in operation): η = Ap / Az = P1 / (P1 + P2).
Calculation: η = 1750 / (1750 + 50) = 0.972 or 97.2%.
Answer: The efficiency of the considered mobile unit is 97.2%.
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