A boy uses a single fixed pulley to lift a load of 50 kgf to some height. Another boy uses a single movable pulley to lift the same load to the same height. Compare the effort applied by them. Give a reason to support your answer.

Explanation

To solve the problem, we need to determine the effort applied by both boys when lifting the same load using different types of pulleys.

### Step 1: Understand the types of pulleys
- A **fixed pulley** changes the direction of the force applied but does not reduce the amount of effort needed to lift the load.
- A **movable pulley** reduces the amount of effort required to lift the load by distributing the weight.

### Step 2: Calculate the effort for the fixed pulley
- The mechanical advantage (MA) of a fixed pulley is 1.
...