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A horizontal spring of constant k is attached to a mass m that slides on a slightly frictional floor. After the mass is displaced

A horizontal spring of constant k is attached to a mass m that slides on a slightly frictional floor. After the mass is displaced a distance A from the equilibrium and released, the amplitude of oscillation decreases to 0.66A after 12 cycles. What is the Q, quality factor, of this system?

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