AP® Physics C: Mechanics · Unit 3 · Topic 3.2
Work Done by a Variable Force
Watch it explained
- How it worksHow do thin slices of F dx add up to the total work along a path?
- Worked exampleFind the work done stretching a spring with k = 400 N/m from its relaxed length out to 0.15 m.
- Worked exampleFind the work done by a force F(x) = 6x2 newtons moving an object from x = 1 m to x = 3 m.
- Common mistakeWhy isn't the work done on a spring just the final force times the distance stretched?
Check yourself
Your turn1 of 2
Find the work done stretching a spring with k = 379 N/m from its relaxed length out to 0.212 m.End of topic.