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Homework Help: Lagrangian method (2 problems)

  1. Oct 26, 2006 #1
    Problem 1:
    A heavy ring of mass M can slide on a frictionless rod. The rod is attached to a wall at one end with a bracket and the other end hangs downward, so the angle between the rod and the wall is α. One end of a massless spring of constant k is attached to the bracket and the other end is connected to the ring. Determine the Lagrangian for the system and equation of motion.

    Problem 2:
    Obtain the equations of motion for a spherical pendulum, that is, a pendulum that is not constrained to oscillate in a plane.
  2. jcsd
  3. Oct 26, 2006 #2
    I can help with these problems but I need to see what you've tried first.
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