So as I was staring at the ceiling in my room, trying to think of something to write a blog about, I caught sight of the pull cords hanging from my ceiling fan in my room. (Apparently the shutter speed of my camera is fast enough to catch the fan blades as still, even though they're moving really quickly, but maybe that's another blog. :P) Ignore the strange shadows that my camera flash caused on the ceiling.
Both the pulls, the round crystal-ey one and the dolphin one, are like the weights that we've been studying and doing problems about. They both have two forces working on them: the tension of the metal cord pulling them upwards, and their weight (mg) pulling them downwards(NOT SIDEWAYS, despite how I sometimes want to draw them in free body diagrams). The weight, mass x the acceleration of gravity, is equal to the mass of the plastic pull itself. The tension of the cord must be equal to the weight of the fan pull, since the pulls aren’t randomly floating upwards.
I've also just learned that if you try to paste to straight from Microsoft Word to Blogger, Blogger becomes unhappy. And the picture disappears. Okay, won't do that again.
snihplods. lovely
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