An automotive engine having a mass of 135 kg is supported on 4 springs – McqOptions

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1.	An automotive engine having a mass of 135 kg is supported on 4 springs with linear characteristics. Each of the 2 front springs have stiffness of 3 MN/m while the stiffness of each of 2 rear springs is 4.5 MN/m. The engine speed (RPM) at which resonance is likely to occur is
A.	103/(6π)
B.	1/(6π)
C.	104/(π)
D.	103/(3)
Answer» D. 103/(3)

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