I'm a bit unsure about my answers. Help! (posting figure) link: http://imgur.com/whExO3S 1. The problem statement, all variables and given/known data http://imgur.com/whExO3S Consider the harmonic oscillator composed of a mass and two springs of spring constants k1 and k2 (shown in figure). If the mass, M moves on a friction less surface, answer the following in terms of the quantities given. a) What is the restoring force on the mass when it is displaced a distance of x to the right? b) What is frequency of oscillation, ω, for this oscillator? 2. Relevant equations ω=sqrt(k/M) F=-kx 3. The attempt at a solution a) F=k1x+k2x=x(k1+k2) b) ω=sqrt(k/M) since there are two force constants acting on the mass ω=sqrt((k1+k2)/M) ^seems way too simple though. What am I missing?