A simple pendulum consisting of a bob on a 65-cm long string is released from a...

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A simple pendulum consisting of a bob on a 65-cm long string is released from a 20° angle with respect to the vertical. Underneath the bob is a vertical disc with a ball glued to the edge rotating at a constant speed. What should be the angular speed of the disc, and at what radial distance should the ball be located, so that the vertical position of the bob and ball are always in sync? What would be the period of the motion? A simple pendulum consisting of a bob on a 65-cm long string is released from a 20° angle with respect to the vertical. Underneath the bob is a vertical disc with a ball glued to the edge rotating at a constant speed. What should be the angular speed of the disc, and at what radial distance should the ball be located, so that the vertical position of the bob and ball are always in sync? What would be the period of the motion?

Answer rating: 100% (QA)

Its a compound pendulum because the bob the sphere has a finite size and the disc contributes to the inertia of the system This makes the analysis more complex than a simple pendulum For a simple pend... View the full answer