CK-12 Physical Science Concepts - For Middle School

4.41. Mechanical Advantage http://www.ck12.org

2. What is the mechanical advantage of the lever in question 1?

Review

1. What is the mechanical advantage of a machine?


2. How is the actual mechanical advantage of a machine calculated?


3. How does ideal mechanical advantage differ from actual mechanical advantage? Why is the ideal mechanical
   advantage of a machine always greater than the actual mechanical advantage of the machine?


4. A hammer has an input distance of 3 cm and an output distance of 9 cm. What is its ideal mechanical
   advantage?