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tensor0910
Gold Member
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Homework Statement
At t = 0 seconds, the position of the oscillator is found to be -27.33 cm and the velocity of the oscillator is +0.744 m/s. What is the amplitude of the oscillation?[/B]
Homework Equations
position/time equation for oscillation: x(t) = Acos(wt + phi )
for velocity: v(t) = -Vmax sin(wt + phi )[/B]
The Attempt at a Solution
at t = 0, the position is -.2733 m and the velocity is .744 m/s.
This leaves us with two equations with 2 unknowns. ( I think ) this is how they should look:
-.2733 = Acos(phi)
.744 = -.744sin (phi )
I unsuccessfully attempted to solve for either unknown and ended up with:
tan(phi ) = -A/-.2733
This is where I got stuck. Not even sure if my algebra is correct. Any/all tips are appreciated. Thank you in advance!
Edit: Original problem coupled with question. Sorry, forum noob here :-)
A mass of 1.4 kg is attached to a single spring and set into oscillation. The period of the spring oscillation is measured to be 4.22 seconds
[/B]
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