Chapter 4 - Laws of Motion
The origin of forces
Separating interactions into forces
Mach's Principle
Example of a strong electromagnetic force
Axiomato Sive Leges Motus
Free body diagrams
Static equilibrium
Train couplers
2-mass pulley
Principle of Equivalence
Frictional mass and pulley
Inclined plane
3 cases
Dragster
Acceleration
3 ways
Armstrong's suggestion
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