My Most Recent Video (2016.06.16)
Introductory Kinetic Friction on an Incline Problem (6:59)
You place a book on a 14° incline and then let go of the book. If the book takes 2.05 seconds to travel 0.78 meters, what is the coefficient of kinetic friction between the book and the incline? This is an AP Physics 1 Topic.
0:01 The example
0:13 Listing the known values
1:09 Drawing the free body diagram
1:58 Net force in the perpendicular direction
2:34 Net force in the parallel direction
4:03 Solving for acceleration
5:07 Solving for Mu
5:40 We made a mistake
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