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(a) A 350-g mass is oscillating on a horizontal spring with a frequency of 20 Hz....

(a) A 350-g mass is oscillating on a horizontal spring with a frequency of 20 Hz. What is the spring constant of the spring? (b) How much total energy does the mass-and-spring combination have if its amplitude is 2.0 cm? (c) If the mass were hung from a light string, what length would the string have to be so that the resulting pendulum would have a period ten times that of the mass-and-spring combination in part (a)?

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