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Homework help, physics

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2.0 kg block is attached to a massless spring and free to oscillate without friction in the horizontal direction. The block is displaced 5.0 cm from equilibrium and released. The period of the motion is 1.5 s. What is the elastic constant of the spring?

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  1. T = 1.5 s

    f= 1/T =1/1.5

    w= angular frequency = (2pi)f

    w= sqrt(k/m)

    Solve for k

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