Question: The position of a mass oscillating on a spring is given by x = (7.8 cm) cos[2t/(0.68 s)]. (a) What is the frequency of this

The position of a mass oscillating on a spring is given by x = (7.8 cm) cos[2πt/(0.68 s)].

(a) What is the frequency of this motion?

(b) When is the mass first at the position x = -7.8 cm?

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