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Physics "Magic Trick" on an Incline

By Flipping Physics, 10/16/2015
Understand the forces acting on an object on an incline by analyzing the forces on a “floating block”.
Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:28 Finding the incline angle
1:17 Drawing the Free Body Diagram
2:26 Summing the forces in the perpendicular direction
3:49 Summing the forces in the parallel direction
5:04 Determining masses for the “Magic Trick”
6:11 Adding pulleys, strings and mass
7:34 Floating the block
8:18 Analyzing the forces on the floating block
Thanks to Nic3_one and Cyril Laurier for their Fire Sounds:

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