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Not a homework

  1. Nov 13, 2003 #1
    What is the total mechanical energy of a mass of 2 kg oscillating on a spring given that the maximum velocity of the mass is 5 m/s and the spring constant is 50 N/m?
     
  2. jcsd
  3. Nov 14, 2003 #2

    ShawnD

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    Science Advisor

    The formula for mechanical energy is this:
    E = (1/2)mv^2 + (1/2)kx^2

    When the mass is at the equilibrium position, the spring is 0 from equilibrium and the mass is at maximum velocity. The formula looks like this then
    E = (1/2)(2)(5)^2 + (1/2)(50)(0)^2
    E = 25 Joules

    Wasn't that easy :)
     
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