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- Homework Statement
- Assume a pendulum of length L is released from angle theta. When it swings to its lowest point (at the point where the string is vertical). the string hits a rod that is perpendicular to the plane of the swing and positioned at 1/2 L. Find an expression for the angle to which the pendulum will swing after hitting the bar.

- Relevant Equations
- PE = mgh

KE = 1/2 mv^2

TME = PE + KE

When the pendulum is released, the Kinetic Energy should be 0. When the pendulum is at the bottom/hits the rod, it should have 0 potential energy. However, I don't quite understand what happens after it hits the rod.