Physics › Section E · Work, energy, and power › Topic E.1
Work
In physics, work is not effort: it is energy handed over by a force that moves something. Learning exactly when a force does work, and when it does none, is the first step towards using energy to solve problems.
In this topic
- Effort is not work
- The definition
- Positive, negative and zero work
- Worked example: pulling a wagon
- Forces that do no work
- Several forces and net work
- Worked example: a crate against friction
- Lifting and lowering
- Work from a force-displacement graph
- Common mistakes to avoid
- Key takeaways
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