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A 4.50-kg object on a frictionless horizontal surface is attached to one end of a horizontal...

A 4.50-kg object on a frictionless horizontal surface is attached to one end of a horizontal spring that has a force constant k = 840 N/m. The spring is stretched 7.00 cm from equilibrium and released. (a) What is the frequency of the motion? Hz (b) What is the period of the motion? s (c) What is the amplitude of the motion? cm (d) What is the maximum speed of the motion? m/s (e) What is the maximum acceleration of the motion? m/s2 (f) When does the object first reach its equilibrium position? s (h) What is its acceleration at this time? m/s2

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