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March 30, 2017

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A mass of 0.4 kg, hanging from a spring with a spring constant of 80 N/m, is set into an up-and-down simple harmonic motion. What is the velocity of the mass when at its maximum displacement of 0.1 m?

  • College Physics - ,

    its maximum displacement is also its Amplitude. When an object is in SHM and reaches its A, its velocity is zero.

  • College Physics - ,

    1.4 m/s

  • College Physics - ,

    Total E=1/2KA^2
    Kinetic E=1/2mv^2

    Kinetic E= Total E

    1/2(80)(0.1)^2=1/2(0.40)(v)^2
    v=1.4 m/s

  • College Physics - ,

    Answer is 0 m/s. At maximum displacement there is no velocity

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