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  <h1><img width=1268 height=696 id="_x0000_i1025"
src=p9-4.jpg></h1>
  <p>Making rough visual estimates just based on the picture on the right,
    presume Thor's hammer is a 10cmX10cmX30cm cube held by a 60cm rod. Assume a
    heroic mass of 20kg for the hammer and 5kg for the rod. On the picture on the
    left, Thor is swinging the hammer in a vertical plane at the heroic speed of 3delta.deltadeltadelta rad/s.
    At the instant the hammer head is 20 degrees from the horizontal, determine the
  forces exerted on Thor's hand by Mjolnir.</p>
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