The position of a particle in cm is given by x 7 cos 9t


The position of a particle in cm is given by x = (7) cos 9?t, where t is in seconds.

(a) What is the frequency? (hz)

(b) What is the period? (sec)

(c) What is the amplitude of the particle's motion? (cm)

(d) What is the first time after t = 0 that the particle is at its equilibrium position? (sec)

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Physics: The position of a particle in cm is given by x 7 cos 9t
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