The equation of free vibrations of a system is (ddot{X}+36 pi^{2} X=0). Its natural frequency is (a)
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The equation of free vibrations of a system is \(\ddot{X}+36 \pi^{2} X=0\). Its natural frequency is
(a) \(46 \mathrm{~Hz}\)
(b) \(3 \pi \mathrm{Hz}\)
(c) \(3 \mathrm{~Hz}\)
(d) \(6 \pi \mathrm{Hz}\).
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