These are descriptions of the files downloadable at the bottom of this page.
Force Diagram tips.pdf - a brief overview of steps to drawing force diagrams
Double Pulley.pdf - a look at two different situations of a two pulley system. You might not expect this result!
Notes 5.7 Double Mass System.pdf - two ways of finding the acceleration of a double mass system but only one way to find the tension in the string.
Notes 5_8 5_9.pdf - notes from textbook sections 5.8 & 5.9 and some key ideas from sample problem 5.4 on pp. 100-101.
Supplemental Videos from this unit can be found be clicking here.