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Homework Help: Quick Question on Conservation of Energy!

  1. Nov 12, 2012 #1
    Quick Question on Conservation of Energy! :(

    #1. Number1.png

    For this one, I did

    a) W = ½kx² = ½*410*.053² = 0.5758 J
    b) V = √[2W/m] = √[2*.5758/2.00] = 0.7588 m/s

    Are those right?
    If so, can you help me solve Number 3 and 7 real quick!

    #3. Number3.png


    #7. Number7.png
     
    Last edited: Nov 12, 2012
  2. jcsd
  3. Nov 12, 2012 #2

    SammyS

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    Re: Quick Question on Conservation of Energy! :(

    Those answers look good.

    I suggest posting #3 & #7 each in its own thread.

    You will also be expected to post an attempt at a solution for each.
     
  4. Nov 12, 2012 #3
    Re: Quick Question on Conservation of Energy! :(

    I tried but no one responded...
    just my luck..............
     
  5. Nov 12, 2012 #4
    Re: Quick Question on Conservation of Energy! :(

    I tried but no one responded..........
     
  6. Nov 12, 2012 #5

    SammyS

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    Re: Quick Question on Conservation of Energy! :(

    Did you post #3 ?
     
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