A 3 kg mass suspended from a spring having stiffness of k= 200N/m. if the block is pushed

50mm upward from its equilibrium position and then released from rest.
a) Determine the equation that describes the motion of the mass-spring syst

h = 50*10^-3 meters

y = 50*10^-3 cos w t (so it is positive at t = 0 when speed is zero)
where
w = sqrt (k/m) = sqrt (200/3)