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`tau_z = - "m" *g* "d" *sin( theta )`

Enter a value for all fields

The **Restoring Torque on a Physical Pendulum** calculator computes the torque due to the gravitational force on a physical pendulum which causes the pendulum to be "restored" or driven toward its equilibrium point.

**INSTRUCTIONS:** Choose the preferred units and enter the following:

- (
**m**) This is the mass of the pendulum - (
**d**) This is the distance from the pivot to the center of gravity - (
**θ**) This is the angle of displacement.

**Torque**: The calculator return the Restoring Torque (τ_{z}) in N•m. However, this can be automatically converted to other equivalent units via the pull-down menu.

Note: this formula employs the constant Acceleration Due to Gravity at Sea-level on Earth (g = 9.80665 m/s²).

- Angular Frequency of Pendulum
- Angular Frequency of Pendulum
- Frequency of Pendulum
- Period of Pendulum
- Restoring Force on Pendulum

Young, Hugh and Freeman, Roger. University Physics With Modern Physics. Addison-Wesley, 2008. 12th Edition, (ISBN-13: 978-0321500625 ISBN-10: 0321500628 ) Pg 438, eq 13.36

*original equation: Billy*