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 Mentors are the guardrails:
Show the students how to do what they need to do, Step back and let the students do what they need to do, Nudge them back on course when they need a nudge, Insist, when necessary, that no one tries to juggle the chainsaws - gblake [more] |
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#14
20-11-2011, 13:57
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Re: Physics Quiz 3
After thinking about it more, the error I made was getting wrapped up in angular motion, thinking that theta was the wheel's angular position about the pivot as the system rotates. What it really represents, though is a constant in this problem, the angle between the wheel's axis of rotation and the pivot arm.
I think that if you increase the torque, nothing will change because the wheel is already slipping. The friction cannot be higher than W*mu so no more torque is able to be useful. |
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