PCN Vibration Analysis Category 2 Practice Questions - BINDT PCN Vibration Analysis Category 2 (ISO 18436-2) Exam

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According to the natural frequency equation for a single degree of freedom (SDOF) spring-mass system (fn = (1 / 2pi) * sqrt(k / m)), what happens to the natural frequency if the system mass (m) is quadrupled while stiffness (k) remains constant?

The natural frequency is reduced by 50% (halved) The natural frequency is reduced to 25% of its original value The natural frequency doubles The natural frequency remains unchanged

Correct Answer:

The natural frequency is reduced by 50% (halved)

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