Physics › Section C · Forces and Newton's laws › Topic C.4
Normal, tension, and other forces
Floors push up, ropes pull, and slopes split your weight in two. This topic gives the rules for the everyday contact forces, so you can draw any free-body diagram and solve it with Newton's second law.
In this topic
- A catalogue of everyday forces
- Where the normal force comes from
- The normal force is not always mg
- Worked example: apparent weight in a lift
- Weight on a slope
- Normal force and acceleration on a slope
- Worked example: a crate on a ramp
- Tension
- Changing direction with a pulley
- Worked example: a lantern on a sagging wire
- Common mistakes to avoid
- Key takeaways
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