1. The problem statement, all variables and given/known data A simple harmonic oscillator consists of a block of mass 2.30 kg attached to a spring of spring constant 440 N/m. When t = 1.70 s, the position and velocity of the block are x = 0.135 m and v = 3.130 m/s. (a) What is the amplitude of the oscillations? What were the (b) position and (c) velocity of the block at t = 0 s? 2. Relevant equations x = xm*cos(wt + (phi)) v = -w*xm*sin(wt + (phi)) w = angular frequency = 2*pi*f 3. The attempt at a solution I tried solving for phi, being the phase constant, so I could eventually find x when t = 0 but I got nowhere. I already got part A correct. How do I approach parts b and c?