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Author Topic: effective mass of the spring  (Read 20760 times)
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kennethkyho
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on: December 17, 2008, 09:41:18 pm »

how to prove that the effective mass of the spring is 1/3 of the actual mass of the spring ?
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Fu-Kwun Hwang
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Reply #1 on: December 17, 2008, 10:11:46 pm »

Cut a spring into n pieces (n smaller springs, so spring constant is n*k), each spring with the same mass m.
Each spring need to hold the hanging mass and all the springs under itself.
So each spring extend different length (linearly).
Calculate all the above and use a effective spring to replace it. Then, you will find the answer you want.
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waleed123
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Reply #2 on: October 16, 2014, 04:21:31 pm » posted from:Lahore,Punjab,Pakistan

I solved my problem. Use the iframe code only, omit the java.

So far, I'm loving this program! Laughing
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