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Question 5
(CRITICAL QUESTION)
Would the following vibrations be caused by a natural frequency or a forced frequency?
a) Pluck a guitar string
b) Misalignment between a motor and pump
c) A worn gear
d) Ringing of a bell
e) Machine tool chatter

Answer:
a) Pluck a guitar string: Natural Frequency
b) Misalignment between a motor and pump: forced Frequency
c) A worn gear: Forced Frequency
d) Ringing of a bell: Natural Frequency
e) Machine tool chatter: Forced Frequency...

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