With the help of a movable block, the worker evenly lifts a load weighing 50 kg.

With the help of a movable block, the worker evenly lifts a load weighing 50 kg. what kind of force does the worker apply to the end of the rope?

1. In order to lift a load with a mass of 50 kg, it is necessary to apply to it a force equal to its weight. Let’s calculate it using the formula:

F = P = mg

F = 50 kg × 10 N / kg = 500 N

2. However, the condition of the problem states that a movable block is used to lift the load. As you know, the movable block gives a double gain in strength, compensating for it with a double movement. This means that the force applied by the worker is halved due to the use of the block:

F / 2 = 500 N / 2 = 250 N

Answer: F = 250 N