Determine the force with which you need to pull the free end of the rope in order to lift a weight of 100 kg
| February 9, 2021 | education
Determine the force with which you need to pull the free end of the rope in order to lift a weight of 100 kg using the movable block.
Let’s translate the mass of the load kg into force in newtons. Since the load is hanging vertically, then
P = m * g = 100 * 9.8 = 980 N.
The movable block reduces the force by half. Then
Pb = P / 2 = 980/2 = 490 N.
Answer: the free end of the rope must be pulled with a force of 490 N.
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