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Phys2A_F07_Lecture_13

# Phys2A_F07_Lecture_13 - Interacting Objects Newton's 3rd...

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W. P. Beyermann Fall 2007 1 Interacting Objects – Newton’s 3 rd Law For every force on an object, there is a force on another object that is equal in magnitude and opposite in direction. How do you identify these paired forces? Paired forces never act on the same object.

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W. P. Beyermann Fall 2007 2 Newton’s 2 nd law applies separately to each system.
W. P. Beyermann Fall 2007 3 Newton’s 3 rd Law Every force occurs as one member of an action/reaction pair of forces. The two members of an action/reaction pair act on different objects. The two members of an action/reaction pair are equal in magnitude and opposite in direction. BA AB F F G G = Notice that force is an interaction between objects. Even though the forces between two objects are equal, the accelerations may not be. The lighter object will do more of the accelerating.

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