1. The problem statement, all variables and given/known data 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. 2. Relevant equations f=(1/2pi)*sqrt(k/m) 3. 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.