Concept explainers
Periods of Pendulums. The period T of a pendulum is the time it takes the pendulum to move from one side to the other and back. A formula for the period is
A Foucault pendulum, shown here at the California Academy of Sciences, demonstrates the rotation of the earth. The pendulum knocks down pins at different positions as the earth rotates.
The pendulum of a grandfather clock is
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Developmental Mathematics (9th Edition)
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