Recent content by Chris1974

  1. Chris1974

    Where does the torque come from?

    Have you ever heard of D'Alembert's principle? I was thinking it might be a useful technique to try to understand the rotation about the intermediate axis, but I just have not have had time to do it. Chris
  2. Chris1974

    Where does the torque come from?

    Spinning objects with three unique moments of inertia are unstable about their intermediate axis. Try spinning a cell phone about all three axes (separately), about the axes with max and min moments, the rotation is stable, but about the intermediate axis the rotation is unstable. It's true...
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