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Two Saturdays ago, I hiked with my friends on Dupont (the one that goes up Mt. Kaala from the Waialua side). It was very long and steep. This made it very difficult to climb, but pretty much made it harder to go down. We had to travel up and down places that were almost vertical, and it made me wonder about those free-body diagrams, because obviously the amount of friction that kept us from sliding down was not big enough sometimes. If it weren't for those ropes on the trail, I probably, along with a couple of my friends, would be dead right now.
However, because it was so steep, making the mgsin# greater than the opposing frictional force, it got me back into the physics mode again after that small break from school that had "high winds."
1 comment:
hmmm, this is a great example of the free-body diagrams of an object on a slope. thanks for sharing this moment
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