" Alice: Well, I must say, I've never heard it that way before.
Caterpillar: I know. I have improoooved it. "
- "Alice in Wonderland" by Lewis Carroll
Contact forces and field forces.
Inter-actions. Action-reaction forces.
Newton's Third Law. Identifying action-reaction forces.
Effects of action-reaction forces on interacting bodies.
What makes us walk?
Acceleration of the Earth caused by an apple.
Approach to solving problems in dynamics. How to use free body diagrams.
How big is the tension in an ascending elevator?
Forces acting at an angles - using components method. Does normal force always balance the weight?
A body on inclined planes. Coordinate system and resolutions of forces. Solving problems with inclined planes.