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Spring vs Kinetic energy

  1. Nov 9, 2013 #1
    A 2-kg block is attached to a horizonal ideal spring with a spring constant of 200 N/m. When the spring has its equilibrium length the block is given a speed of 5 m/s. What is the maximum elongation of the spring?

    Is not the solution simply:

    1/2kx2 = 1/2mv2

    x = (mv2/k)0.5

    x = 0.5 m?

    That is incorrect, though.
  2. jcsd
  3. Nov 9, 2013 #2

    Doc Al

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    Staff: Mentor

    Looks correct to me.
  4. Nov 9, 2013 #3

    rude man

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    Homework Helper
    Gold Member

    Me too.
  5. Nov 9, 2013 #4
    The answer was 5m....probably a typo, just wanted to confirm.

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