(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two identical springs of spring constant 240 N/m are attached to each side of a block of mass 21 kg. The block is set oscillating on the frictionless floor. What is the frequency (in Hz) of oscillation?

Figure:

http://edugen.wiley.com/edugen/courses/crs4957/art/qb/qu/c15/fig15_30.gif

2. Relevant equations

w = sq(k/m)

w = omega = angular frequency

k = spring constant

m = mass

w=2(pi)f

f = w/(2pi)

3. The attempt at a solution

So this problem seemed simple enough...

w = sq(k/m)

w = sq(240/21)

w = 3.38

f = w/(2pi)

f = 3.38/(2pi) = 0.538Hz

Why is this wrong? It must have something to do with there being two springs... but I don't know how that would change things.

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# Frequency of oscillation (spring)

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