3. A mass on a spring oscillates horizontally on a frictionless surface with an amplitude of 15cm, a frequency of 0.2Hz. (a) What is the displacement of the mass at t=3.1 s? (b) How many oscillations has it made since t=0? Use the equation of a wave to solve the problem. (c) Describe how the mass' position varies with time in the course of oscillation? Show the equation of motion for each unit of time.

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3. A mass on a spring oscillates horizontally on a frictionless surface with an amplitude of 15cm, a frequency of 0.2Hz.

(a) What is the displacement of the mass at t=3.1 s?

(b) How many oscillations has it made since t=0? Use the equation of a wave to solve the problem.

(c) Describe how the mass' position varies with time in the course of oscillation? Show the equation of motion for each unit of time.

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