The worker with the help of a movable block lifted the load to a height of 7 m, applying a force of 160 N. to the free end of the rope. What work did he do?
To determine the work done by the worker in question with the help of the movable block, we use the formula: A = P * S = 2F * h.
The values of the variables: F – the applied labor force (F = 160 N); h – the height of the lifting of the load (h = 7 m).
Let’s perform the calculation: A = 2F * h = 2 * 160 * 7 = 2.24 * 10 ^ 3 J (2.24 kJ).
Answer: The worker in question did a job of 2.24 kJ.
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