What weight can be lifted with a movable block weighing 40 N, if the rope is pulled with a force of 0.2 kN.

We need to find a load that can be lifted with a movable block weighing 40 N by pulling the rope with a force of 0.2 kN.

We move the block gives a gain in strength twice. Therefore, with a force of 0.2kN, a weight of 0.4kN can be lifted. In order to find the load, we need to subtract the weight of the block 40 N and get the weight of the load. From the beginning we will change the values:

0.2 kN = 200 N and 0.4 kN = 400 N.

Let’s find the weight of the load, subtracting the weight of the block 40 N:

400 N – 40 N = 360 N.

Answer: The weight is 360 N.