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--- 183_notes:torque [2014/11/20 16:48] – caballero
+++ 183_notes:torque [2015/10/14 15:43] – [Torque] caballero
@@ Line 1: / Line 1: @@
 ===== Torques Cause Changes in Rotation =====
-Until now, you have worked with forces and work to explain and predict object motion. You've even used [[183_notes:rot_ke|work and energy to begin to explain that objects can rotate]], but you haven't yet unpacked how that occurs -- only that a system can share energy between translation and rotation. In these notes, you will read about torque, which is a force applied at a distance from a specific point that causes a twisting or rotating about that point.
+Until now, you have worked with [[183_notes:mp_multi|forces]] and [[183_notes:work|work]] to explain and predict the motion of objects. You've even used [[183_notes:rot_ke|work and energy to begin to explain that objects can rotate]], but you haven't yet unpacked how that occurs -- only that a system can share energy between translation and rotation. In these notes, you will read about torque, which is a force applied at a distance from a specific point that causes a twisting or rotating about that point.
+==== Lecture Video ====
+{{youtube>SrRoXGqRNi8?large}}
 ==== Torque ====
@@ Line 55: / Line 58: @@
 $$\vec{\tau}_A = \langle 0,0,r_xF_y-r_yF_x\rangle$$
-Notice that if the lever arm point in the same (or precisely opposite directions) the torque is zero. The cross product of two parallel or anti-parallel vectors is zero.
+Notice that if the applied force and the lever arm point in the same (or precisely opposite directions) the torque is zero. The cross product of two parallel or anti-parallel vectors is zero.
 ==== Sign of the Torque comes from the Right-Hand Rule ====