2026-08-19 19:01:21: Rotational Inertia

2026-08-19 19:01:21 -04:00
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+[[Torque and Rotational Dynamics]]
+
+Twisting effect a force has around an axis of rotation.
+
+# Summary
+* Only the force component perpendicular to $\vec r$ generates torque.
+* Magnitude of torque: $$\tau=rF\sin \theta=rF_\perp$$
+* Torque is at its largest when the force is applied 90$\degree$ to r.
+* Force diagrams are like FBD but shows how each force acts relative to the axis.
+