Mechanical Aptitude – Pulley Question #2
Pulley Question #2
Welcome to our mechanical aptitude highlight series. Every week, we post a new free question to help you pass your mechanical aptitude test. We cover levers, maps, pulleys, electrical circuits, gears and tools.I hope you find it useful!
Today we will be covering pulleys.
Considering weight Y is 75lbs; with the help of a single pulley, how much force is required to lift this weight?
1. 37.5 lbs of force
2. 75 lbs of force
3. 25 lbs of force
4. 70 lbs of force
The correct answer is #1. To determine the mechanical advantage of a pulley is by determining the number of ropes that can be pulled upwards. In this example, there are two ropes available, therefore, we divide the number by two 75/2=37.5 lbs