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A 40N force stretches a verticle spring 0.250m. a) what mass must be suspended from the...

A 40N force stretches a verticle spring 0.250m.

a) what mass must be suspended from the spring so that the period of oscillation is T=1.00s

b) If the amplitude is 0.050m and the period is as said above where is the object and in what direction is it moving 0.35s after passing equilibrium, moving downward?

c) What force (mag and direct) does the spring exert on the object when it is 0.030m below the equilibrium position, moving upwards?

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