1. The problem statement, all variables and given/known data One end of a light hacksaw blade is clamped in a vise with the long axis of the blade horizontal and with the sides vertical. A 0.665- kg mass is attached to the free end. When a steady sideways force of 20.5 N is applied to the mass it moves aside 13.3 cm from its equilibrium position. When released, the blade moves back and forth with harmonic motion. Approximately how many complete oscillations will the blade make in 30.0 s when the force is removed? 2. Relevant equations (I don't know any...) 3. The attempt at a solution I have absolutely no clue where to begin with this problem. Please help!