Learn how to calculate the resultant of 3 or more force vectors using the parallelogram law. This video has two detailed examples adding multiple forces.

0:00 Lesson Objective
0:33 Example 1 Start
2:10 Drawing Parallelogram
2:47 Apply law of cosines and law of sines
3:44 Drawing 2nd Parallelogram for Example 1
4:49 Apply law of cosines and law of sines
6:57 Example 2 Start