Springs! Springs are awesome and useful. Today we briefly introduced springs (we'll be doing more with them later) and derived an expression for the potential energy stored in a spring.
Here are the notes: Spring Potential Energy
Note that we derived Hooke's Law by graphing F vs. x, either by using a physical slotted mass/spring set or with the PhET simulation (depends on availability of materials).
We also used these awesome direct measurement videos by Peter Bohacek:
Cart on ramp with spring
Cart launched by spring
Your homework tonight is Chapter 5 (p.160) #35, 39, 67
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