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T A 5 kg man artached to a lincar pring undengoes simplc harmonic motion along a rictionles abletoy widh am amplitude of 0.35 m and frequency of 0.67 Hz. (a) Explain what the two criteria are for simple harmonic motion. (b) Calculate the value of the spring constant. (e) What is the ratio of the mass acceleration when it is at half its amplitude to its acceleration when t is at fill amplitude? (d) Sketch a graph of the masss acceleration as a function of its velocity for half of a cycle. Start when the mass is at its greatest positive amplitude. Mark the initial acceleration as a,

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