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Heat Transfer of nail into a board

  1. Sep 10, 2009 #1
    1. The problem statement, all variables and given/known data

    A nail driven into a board increases in temperature.

    2. Relevant equations

    If we assume that 60 % of the kinetic energy delivered by a 1.80-\rm kg hammer with a speed of 7.80 \rm m/s is transformed into heat that flows into the nail and does not flow out, what is the temperature increase of an 8.00-\rm g aluminum nail after it is struck ten times?

    3. The attempt at a solution

    KE=1/2mv2
    =1/2(1.8)(7.8)2
    =54.756

    60% of 54.756 = 32.8536

    Q=mc[tex]\Delta[/tex]t
    32.8536=.008(910)[tex]\Delta[/tex]t
     
  2. jcsd
  3. Sep 10, 2009 #2

    rl.bhat

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    Homework Helper

    Nail is struck 10 times.
     
  4. Sep 10, 2009 #3
    Nail is struck 10 times and moreover is there any heat loss while the nail is being driven!
     
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