L-R-C series resonance

L-R-C parallel resonance

mX" + bX' + kX
ωn = ( k / m )

Iθ" + bθ' + kθ
ωn = ( k / I )

V1 = V2
r1 ω1 = r2 ω2
n1 ω1 = n2 ω2

F1 = F2
τ1 / r1 = τ2 / r2


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