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Particle dropped on platform with spring - Compression of springs

  1. Oct 22, 2006 #1
    A massless platform is kept on a light elastic spring.
    When a particle of mass 100g is dropped on the platform from a hieght of 24cm it strikes the platform and compresses the spring by 1cm.
    From what hieght should the particle be dropped to cause a compression of 4cm?
    [text book answer: 396cm]
  2. jcsd
  3. Oct 22, 2006 #2


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    Homework Helper

    Use the fact that energy (kinetic + potential) is conserved.
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