1. The problem statement, all variables and given/known data A particle moves with SHM through two points p and q 1.2 metres apart. It takes 3 seconds to move from p to q and 3 seconds to move from q to q, i.e. passing q the next time. Find the period of the particle and the amplitude. 2. Relevant equations x = ACos(wt + a) v = w(A^2-x^2)^1/2 a = -w^2x 3. The attempt at a solution I drew a diagram, and tried associated circular motion, but the problem is I have no idea where to start the motion, or if I can take the point half way between p and q as being equilibrium.