- #1
mariegrdnr
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Homework Statement
A 0.500 kg mass is suspended from a spring and set into
oscillatory motion. A motion detector is used to record the motion, and it is found that its velocity function is given by Vx(t) What are:
a. the period of the motion;
b. the amplitude;
c. the maximum acceleration of the mass; and
d. the force constant of the spring?
Homework Equations
given
Vx(t)=-ωAsin(ωt+[itex]\phi[/itex])
not given but seems like the way I need to head
Fspring=-k[itex]\Delta[/itex]y
T=2pi[itex]\sqrt{m/k}[/itex]
The Attempt at a Solution
Did FBD where Fspring=-k[itex]\Delta[/itex]y is straight up and weight=4.9N goes straight down. Giving Fnety=
K[itex]\Delta[/itex]L-mg=0
K[itex]\Delta[/itex]L=mg? can I make this assumption or am I missing something?
Also I have three unknowns k,[itex]\Delta[/itex]L, T and can't find another equation to substitute into for third variable. I just need to know if I am heading in the right direction for this problem.