H'okay, I think the problem is that you have to look at both the wheel as a system and the car as a system to understand the forces at work. My awesome FBD.
Friction with the brake pad stops the wheel. Friction with the ground stops the car. If there were no friction with the ground, the car would just keep sliding despite the wheels not turning (and also wouldn't start moving, but let's pretend friction magically went away halfway.)
I don't know where you'd find a cite for that. It's kind of high school physics.
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timeasmymeasure
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Date: 2007-12-06 01:14 am (UTC)Friction with the brake pad stops the wheel. Friction with the ground stops the car. If there were no friction with the ground, the car would just keep sliding despite the wheels not turning (and also wouldn't start moving, but let's pretend friction magically went away halfway.)
I don't know where you'd find a cite for that. It's kind of high school physics.