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Homework Help: Momentum from Springs

  1. Jun 28, 2012 #1
    1. The problem statement, all variables and given/known data
    I have a metal spring 50mm in diameter 152 mm long compressed to half its length ie 76mm by using a weight of 50kg. I have used a clip to hold it compressed. When that clip is broken the spring will expand back to its original length of 152mm. How can I work out how far it will push a tennis ball weighing 1kg into the air and how long will this take ?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Jun 28, 2012 #2


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