Answer to Question #175922 in Mechanical Engineering for luke

Question #175922

A spring extends 2 inches when loaded vertically with 4 lbs. This weight was pulled further down by 3 inches an was released from rest. Determine the frequency of vibration in Hz


1
Expert's answer
2021-04-01T01:12:43-0400

Given as,

Mass attached (m)=4lbs

Extension in the spring(y)=3inches=0.25 ft

The spring constant(k)="\\frac{m\u00d7g}{y}=\\frac{4\u00d732.2}{0.25}=515.2\\: lb-f\/ft"

The natural frequency is given by,

"f= \\frac{1}{2\\pi} \\sqrt{\\frac{k}{m}}=1.81 Hz"


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