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A 1.50-kg mass on a spring has displacement x as a function of time t given by
x(t) = 0.0740 cos (4.16 t-2.42) meters.
Find:
(a) the time it takes for one complete vibration,
(b) the force constant of the spring,
(c) the maximum speed of the mass,
rimum force exerted on the mass by the spring.

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