Simple Pendulum Restoring Torque

Question

A simple pendulum of mass $$m$$ and length $$L$$ oscillates with a small angular displacement $$	heta$$. Which of the following expressions represents the restoring torque $$	au$$ that produces this approximate simple harmonic motion?

Accepted Answer

$$	au = -mgL	heta$$

Answer

$$	au = -I\omega^2 \sin(	heta)$$

Answer

$$	au = -I\omega^2	heta^2$$

Answer

$$	au = -I	heta$$

Simple Pendulum Restoring Torque

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