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The Not-so-simple Pendulum 1

See how the motion of the simple pendulum is not-so-simple after all.

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The Not-so-simple Pendulum 2

Things are roughened up and friction is now added to the approximate simple pendulum

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Adjust Pendulum

Think about ways to modify the period of a pendulum

Simple Pendulum

Age 16 to 18 Challenge Level:
  • Read an article on dimensional analysis
  • The period could be expressed as $T = \alpha \times m^{A}g^{B}l^{C}$ where we need to choose A, B, C such that the dimensions on both sides of equation agrees. $\alpha$ is a constant which can be found by experiment.
  • The acceleration of gravity has dimensions $L/T^2$ (meter per second squared).