Do this activity (and answer the questions I\'ve selected) from p. 120 of the te

Question

Do this activity (and answer the questions I've selected) from p. 120 of the text: Put the friction slider to the left so that there is no friction. Check to show velocity and acceleration. Slow the motion down to see what happens more clearly. Where is the velocity zero? What is the angle between the velocity vector and the pendulum string? Click on "Show energy." Follow the kinetic, potential, and total energy. Where is each at its maximum and where are they zero? (Don't let the energy get so large that the bar graph no longer follows it.) If the applet doesn't work for you, try and come up with an answer for each question anyway (based on a pendulum with no air drag). You can still think about it - the simulation just helps you visualize!

Explanation / Answer

In a pendulum velocity is maximum at the mean position. And is zero at the extreme position s.

Whereas acceleration is maximum at extreme positions and zero at mean position.

The kinetic energy is maximum at mean position and zero at extremes.

The potential energy is maximum at extreme s , wheras zero at mean position.

The total energy remains the same ( when air resistance is neglected)

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