college physics

To stretch a spring 7.00 cm from its unstretched length, 16.0 J of work must be done.


What is the force constant of this spring?


What magnitude force is needed to stretch the spring 7.00 cm from its unstretched length?


How much work must be done to compress this spring 4.00 {\rm cm} from its unstretched length?


What force is needed to stretch it this distance?
F =

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asked by jon

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