Here is the question:
"A spring stretches 0.4m when a 2kg mass is hung from it. The spring is stretched an additional 0.2m from its equilibrium point and is released. Determine: The Max Acceleration"
The formula for Max Acceleration is: kA/m where: k=spring constant A = Amplitude m = mass
The Spring Constant is 49N which I found and is correct. Now my question is: Why is the Amplitude 0.2m? The video I am watching:Simple Harmonic Motion at point: 46:16, he says the amplitude is 0.2m but wouldn't it be 0.6m since it said additionally in the problem or did we just create a new equilibrium out of nowhere? Thanks! -Guy who has a final tomorrow and is learning an entire semester in 2nights