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A mass on a spring has an angular oscillation frequency of 2.81 rad/s. The mass has...

A mass on a spring has an angular oscillation frequency of 2.81 rad/s. The mass has a maximum displacement (when t = 0 s) of 0.232 m. If the spring constant is 25 N/m, what is the potential energy stored in the mass-spring system when t = 1.42 s?

How long will it take the mass to pass through the equilibrium position for the 7th time?

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