A mass sits on a frictionless table. It is attached to a vertical wall by a spring. The mass is initially located at x = 0 when the spring is unstretched (equilibrium position). You pull the mass away from the equilibrium position, out to where x = A, and then release it. The mass then oscillates horizontally back and forth in simple harmonic motion. Which, if any, of the statements below is/are true about this motion?

Question

anonymous · Answer

The radial frequency ( ω ) is 2 π T, where T is the period. 
The total mechanical energy of the mass-spring system at x = A is the same as the total mechanical energy at x = -A, but different from the total mechanical energy at x = 0. 
The potential energy of the mass-spring system is maximum at x = 0 
The speed of the mass is maximum at x = -A and at x = +A. 
The period ( T ) of oscillation is proportional to √( m/k ). 
The magnitude of the acceleration of the mass is maximum at x = A.

anonymous · Answer

I have:

F
F
F
F
T
T

My friend thinks the second to last one is false. Do I seem correct?

anonymous · Answer

you are correct