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

[abrowaqas]

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 ?

 

[K^2]

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?