Question

An object stretches a spring 5 cm in equilibrium. It is initially displaced 10 cm above equilibrium and given an upward velocity of 0.25 m/s. Find its displacement for t>0. Find the frequency, period, amplitude, and phase angle of the motion.

Answer 1

\[y''+\frac{ k }{ m }y=0\]

Answer 2

How do I find k/m?

Answer 3

@freckles @Kainui

Answer 4

from the initial equilibrium displacement, you have

\[mg = kx_o\]

\[\dfrac{k}{m} = \dfrac{g}{x_o}\]

does that get the ball rolling?