If the driving frequency is very close to natural frequency of oscillator, then which of the following would represent the equation of amplitude
1
\(A = \frac{F_{0}}{\omega_{d} b}\)
2
\(A =\frac{ \sqrt{2}b}{k}\)
3
\(A = \frac{F_{0}}{b}\)
4
\(A = \frac{K}{m}\)
5
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