M ASSAC H USE T T S I NST I T UT E OF T E C H NOL OG Y
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Pres entations :
P roblem 1)
This was your problem last time—S how the whole solution from the last homework
and for this one.
P roblem 2)
P r o b l e m 3
P roblem 4
Problem 5)
T hink about these problems before class and come prepared to ask me
about what you don’t understand. However, read through the notes I handed out first.
I am expecting wellprepared presentations. F or the problem you are responsible for, I
expect you to have really worked to get it right, including coming in to talk if you don’t
unders tand s omething.
Day 31
Day 28
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You did problem 661 for the last problem set. This time, let L=1.0 m, m = 2.0 kg, and f
n
=
1.3 Hz.
a.
Determine the spring constant, k.
b.
In a free vibration test, two successive peaks, A
n
and A
n+1
, are found to have
amplitudes of A
n
= 0.1 radians, and A
n+1
= 0.03 radians. Use the concept of the
logarithmic decrement to calculate the damping ratio for the system.
c.
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 Fall '08
 MarkusBuehler
 Energy, Kinetic Energy, Potential Energy, TLP

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