Monday, October 18, 2010
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Welcome to PHY 121 Blog Help. Here's how it works. For each homework question and lab report we will make a post, this will probably contain a few tips on what the problems are about and how to solve them. If you are stuck on something then instead of emailing us directly you should post a comment in reply to the relevant post. We will try to guide you through tough points and help you understand the problems and the concepts behind them.
4 comments:
I can't figure out parts b and c.
I'm plugging in my value 1.1 Hz for T and my 28cm value for x0 for the maximum velocity equation v0=(2*pie/T)*x0 but I still get an incorrect answer. Same with the maximum acceleration equation a0=(2pie/T)^2 * x0. Is this incorrect?
how do we do parts b and c??
Hz means frequency not period. Use T=1/f to get T.
The distance is just the distance they give you. For the other two, use page 6, eq. 9.2 and 9.3. Don't use the trig equations; use the one next to it. Then, the x0 is just your distance, the answer for the first one.
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