Large Pulley System

6 pulley apparatus Close up of the ropes of the pulley - 6 ropes and 1 to pull

Concept Overview

1. Mechanical advantage of a pulley

Lecturer Procedure

Step(s) to Follow	Expected Result
1. Attach 25-lb weight to the bottom of the lowest pulley. 2. Attach 5-lb barbell to the pulling cord. 3. Release	5-lb barbell will lift 25-lb weight and keep it suspended with ease.
4.2 lbs should be sufficient to keep the weight suspended - the closest we have in stock is the 5-lb barbell

Step(s) to Follow

Expected Result

1. Attach 25-lb weight to the bottom of the lowest pulley.

2. Attach 5-lb barbell to the pulling cord.

3. Release

5-lb barbell will lift 25-lb weight and keep it suspended with ease.

**4.2 lbs should be sufficient to keep the weight suspended - the closest we have in stock is the 5-lb barbell**

Physics Demonstrations