A Pulley as a Simple Machine

Data Table

the lab

Apparatus A

App A data table

Sample Calculations:

Weight lifted:


Work by pulley:


Work by me:


Apparatus B

Apparatus C

Efficiency & Mechanical Advantage

efficiency table

Sample Calculations:



Mechanical Advantage:

Analysis & Conclusions:

1. How can you tell the mechanical advantage of a pulley system, just by looking?



2. What can you say about the efficiency of your pulleys?



last update February 27, 2003 by JL Stanbrough