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## Main Question or Discussion Point

Hi everyone,

I'm planning a simple experiment for my school, which involves fixing a mass M onto a rod of length L made of a copper alloy.

Suppose I drive it capacitively, how do I find the resonant frequency of this simple oscillator? I need its resonant frequency to be about 400-500Hz, which would depend on it's geometry.

I know its:

-modulus of elasticity

-density

-Shear modulus

-torsion constant

I have found that the force varies on sin

≈ Q(τ/k)

but what I need to find is its resonant frequency.

I'm planning a simple experiment for my school, which involves fixing a mass M onto a rod of length L made of a copper alloy.

Suppose I drive it capacitively, how do I find the resonant frequency of this simple oscillator? I need its resonant frequency to be about 400-500Hz, which would depend on it's geometry.

I know its:

-modulus of elasticity

-density

-Shear modulus

-torsion constant

I have found that the force varies on sin

^{2}(ωt), so the drive frequency of the oscillator is the drive frequency of the voltage. I know that at resonance, the amplitude is approxiamtely≈ Q(τ/k)

but what I need to find is its resonant frequency.

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