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November 28, 2014

November 28, 2014

Posted by **Kate** on Monday, January 18, 2010 at 12:23pm.

I have a question about finding the frequency. For some reason I keep on getting ((3.7 / 129.5)^.5) / (2 * pi) = 0.0269020955 that for my answer but the back of the book says 3.0 hz

- jishka, Math -
**GuruBlue**, Monday, January 18, 2010 at 12:33pmplease put the subject in the subject line.

- physics -
**Kate**, Monday, January 18, 2010 at 12:50pmi did for some reason it changes it

- jishka -
**Damon**, Monday, January 18, 2010 at 1:23pm3.7kg * 9.8 = 36.26 N

stretch distance = .028 m

so

k = 36.26/.028 = 1295 N/m

F = m a

-kx = m a

if x = A cos 2pi f t

a = -A (2 pi f)^2 cos 2 pi f t

so

-k A cos 2 pi f t = -mA (2 pi f )^2 cos 2 pi f t

(2 pi f)^2 =k/m

(2 pi f)^2 = 1295/3.7 = 350

2 pi f = 18.7

f = 2.98 Hz

- ap history -
**heather**, Sunday, February 12, 2012 at 2:25amwas the new Deal essentially a conservative attempt to save American capitalism from collapse, a radical change in traditional American antigovernment beliefs, or a moderate liberal response to a unique crisis? please help i tried reading but confuse. im leaning towards conservative attempt. need help badly before monday. thanks so much.

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