{composition-setup}{composition-setup}
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{HTMLcomment}The header material sets up the left navigation column.{HTMLcomment}
{excerpt:hidden=true}Compares the simple pendulum model with a slightly more detailed one.{excerpt}
|!179px-Grandfather_clock_pendulum.png!|
|Photo Courtesy of Wikimedia Commons|
|Downloaded 2009-01-16 from Charles H. Henderson & John F. Woodhull (1901) The Elements of Physics, D. Appleton & Co., New York, p.59, fig.21|
Adding detail to the model of the [pendulum].
{HTMLcomment}The "Solution" header and the *bold* items below should NOT be changed. Only the regular text within the {cloak} macros should be altered.{HTMLcomment}
h4. Solution
{toggle-cloak:id=sys} *System:* {cloak:id=sys}A model of a [pendulum], simply supported and free to swing without friction about a supporting axis under the [torque|torque (single-axis)] due to [gravity|gravity (near-earth)].{cloak:sys}
{toggle-cloak:id=int} *Interactions:* {cloak:id=int}[torque|torque (single-axis)] due to [gravity|gravity (near-earth)|] and the upward force exerted against gravity by the axis.{cloak:int}
{toggle-cloak:id=mod} *Model:* {cloak:id=mod}[Angular Momentum and External Torque about a Single Axis]{cloak:mod}
{toggle-cloak:id=app} *Approach:*
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{toggle-cloak:id=diag} {color:red} *Diagrammatic Representation* {color}
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Include a diagrammatic representation whenever possible.
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{toggle-cloak:id=math} {color:red} *Mathematical Representation* {color}
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The regular solution.
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{HTMLcomment}The footer completes the page setup and attaches the license and acknowledgments.{HTMLcomment}
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