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Exploration 16.2: Pendulum Motion and Energy

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A 4-kg mass is a pendulum bob and undergoes periodic motion (position is given in meters and time is given in seconds). Also shown are bar graphs representing the kinetic and gravitational potential energies in joules. Restart.

Use the animation and the bar graphs to guide your answers to the following questions.

  1. What is the period of the motion?
  2. What is the amplitude of the motion (in radians)?
  3. From the motion and the bar chart, how do you know energy is conserved?
  4. Is this simple harmonic motion?

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