If a mass of 0.3 kg is suspended from a spring of stiffness 200Nm-1. If the mass is displaced by 10mm from its equilibrium position and released, for the resulting vibration, calculate;
1) the frequency of vibration
2) maximum velocity of mass during the vibration
3) maximum acceleration of the mass during vibration
4) the mass required to produce double the maximum velocity calculated in (2) using same spring and initial deflection.