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M ASSAC HUSE T T S I NST I T UT E OF T E C HNOL OG Y
Day 26
11 am, Day 28
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You did problems 645 and 652 in homework number 9. Show the equations of motion.
Find the undamped natural frequency in 645 and the undamped natural frequency and
damping ratio expression in problem 652.
2. Do problem 661.
a.
Determine the undamped natural frequency.
b.
Find an expression for the damping ratio.
3.
Do problem 811. In part a. clearly indicate your choice of coordinate system and show your
equation of motion. In part b. assume 1.5% damping and plot the resulting motion.
4. Do problem 8.13 and determine the natural frequency, as well as the maximum possible
amplitude. Assume the block vibrates at its natural frequency in the problem. They neglect
to say that in the problem. If the large block vibrates at one half of the maximum possible
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 Fall '08
 MarkusBuehler

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