The Restoring Force on a Pendulum calculator computes the restoring force (F) on a point mass pendulum based on the mass (m), acceleration due to gravity (g) and the displacement angle (θ).
INSTRUCTIONS: Choose the preferred units and enter the following:
Restoring Force(F): The calculator returns the force in Newtons (N). However, this can be automatically converted to compatible units via the pull-down menu. Note, this calculator uses the constant acceleration due to gravity at sea level.
Young, Hugh and Freeman, Roger. University Physics With Modern Physics. Addison-Wesley, 2008. 12th Edition, (ISBN-13: 978-0321500625 ISBN-10: 0321500628 ) Pg 436, eq 13.30
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