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The value of spring constant in Mass spring system in an elevator 
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#1
May112, 04:46 PM

P: 115

A mass spring system is in elevator which moves upward with an acceleration "a" . What will be effect on the measured value of spring constant compared to its value when elevator is at rest.
Since K= F/x At rest F=mg But with acceleration F=m(g+a) So I think the value is increased because the acceleration is added to the force .. Am I right ? 


#2
May112, 06:08 PM

Sci Advisor
P: 2,470

Put in some numbers, and see what happens. Say, you've had a 100g mass cause a 2cm displacement on a spring while the elevator was accelerating upwards at 2m/sē. What is the spring constant really? What would you say it was if you weren't aware of these 2m/sē?



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