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laurette1029
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Homework Statement
A block on a frictionless table is connected as shown in the figure to two springs having spring constants k1 and k2.
Find an expression for the block's oscillation frequency f in terms of the frequencies f1 and f2 at which it would oscillate if attached to spring 1 or spring 2 alone.
Give your answer in terms of f1 and f2.
Homework Equations
f=(1/2pi)*sqrt(k/m)
The Attempt at a Solution
If the object was attached to spring 1 alone, the frequecy would be:
f1=(1/2pi)*sqrt(k1/m)
If the object was attached to spring 2 alone, the frequecy would be:
f2=(1/2pi)*sqrt(k2/m)
Since the two springs are in a serie, the constant k of the system of spring is :
1/k1+1/k2=1/k which means k=k1k2/k1+k2
Then the frequecy of the system of springs should be f=(1/2pi)*sqrt(k1k2/m(k1+k2))
This is where I get stuck, I don't know how to express f in terms of f1 and f2.