- #1
Equilibrium
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Homework Statement
A flexible wire 80 cm long has a mass of 0.40g. It is stretched across stops on a sonometer that are 50cm apart by a force of 500N. The wire may vibrate at the following frequencies except one. WHich one?
a. 4000vib/s
b. 1000 vib/s
c. 3000 vib / s
d. 1500 vib/s
Homework Equations
searched google for formula but none so far
no formula in my notes.
probably this one
[itex]a = -\frac{k}{m}s[/itex]
s = displacement
m = mass
k = spring constant
a = acceleration
or this one
[itex]T=2\pi\sqrt{\frac{m}{k}}[/itex]
T = period
m = mass
k = constant
The Attempt at a Solution
i don't know
can you help me start?
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