a) when a 0.350 kg mass is hung on the end of a spring, the spring is observed to stretch by an amount of 12.0 cm in coming to a new equilibrium position. what is the force constant of the spring?
b) the mass is then pulled down a further 8.0 cm and released, and oscillates up and down in simple harmonic motion. what would be the frequency of the motion in Hz, and what is the maximum acceleration?
c) what would be the displacement from equilibrium at time t=1.0 s after release?