Unit 4 Chapter 2 Lesson 5
Efficiency and Friction
Efficiency ( ______
______ ): ___________
___________________
___________________
___________________
___________________
___________________
__________
How to find work
output?
Work input: ____________________
______________________________
______________________________
______________________________
___
How to find work input?
What is the efficiency of a machine whose work input is 375 J
and whose work output is 125 J?
How to find efficiency?
Unit 4 Chapter 2 Lesson 5
Caused by:
1)
2)
Friction: ____________________________
____________________________________
____________________________________
Amount of friction depends on
1)
2)
Actual mechanical advantage: ________________
__________________________________________
__________________________________________
__________________________________________
How to find AMA?