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kerbyjonsonjr
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Homework Statement
In a science museum, a brass pendulum bob swings at the end of a 15m long wire. The pendulum is started at exactly 8:00 a.m. every morning by pulling it 1.5m to the side and releasing it. Because of its compact shape and smooth surface, the pendulum's damping constant is only .010 kg/s.
At exactly 12:00 noon, how many oscillations will the pendulum have completed?
And what is its amplitude?
Homework Equations
w=2[tex]\pi[/tex]f
w=[tex]\sqrt{}k/m[/tex]
T=1/f
The Attempt at a Solution
I used w=[tex]\sqrt{}k/m[/tex] so I had w=[tex]\sqrt{}.01/110[/tex]= .009 then I plugged that into w=2pif so .009=2pif f=.0015 and found the period by doing 1/.0015 and got 659 seconds. Then I converted the 4 hours minutes and got 14,400 and then I divided 14,400/659 and got 21.85.
For the amplitude I am not sure exactly how I would get that but would it just be the length of the wire or how high it goes or something else? Any help would be great. Thanks!