Unit 5: Equillibrium

So... basically we did the same thing we did the day before, but on a more confusing level. We applied the three laws that we had learned the day before and, using the four newly learned forces, solved problems and shit.

Can you tell I didn't really understand?

Anyway, the four forces we talked about were weight (the force that pulls you straight down), normal (the force that makes sure you don't fall down into the center of the earth or something like that), tension (... something about being pulled by strings...), and friction (the thing that gives you a rug burn when you slide on carpets or skin your knee on a sidewalk when your friend doesn't realize you have terrible balance and thinks it would be fun to play life-saver.)

We drew free-body diagrams too... I know they're important, but at the moment, my head is killing me and I can't really describe it...