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The value of spring constant in Mass spring system in an elevator

  1. May 1, 2012 #1
    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. jcsd
  3. May 1, 2012 #2

    K^2

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    Science Advisor

    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/s². What is the spring constant really? What would you say it was if you weren't aware of these 2m/s²?
     
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