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hsphysics2
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Homework Statement
A 1.6kg mass is suspended from a spring inside a stationary elevator. The spring stretches 12cm. The elevator now accelerates upwards, and the spring extends a further 12cm. What is the elevator's acceleration?
Homework Equations
Fy= may
Ue= 1/2 (kx2)
The Attempt at a Solution
I'm just not sure on the best way to start this question.