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A 2.40-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.20sin(2?t), where F is in newtons and t is in seconds. The force constant of the spring is 23.0 N/m.

(a) Find the resonance angular frequency of the system. s-1

(b) Find the angular frequency of the driven system. s-1

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