3. The diagram below shows an object at rest with 3 active forces pulling on it. Solve for F1 if you know that F2 has 174.7 N and that F3 has 232.3 N. The angle for F1 is 43.6 degrees and for F2 is 70 degrees. 76 • On the diagram, show the horizontal and vertical components of each force.( Apply Newton's 2nd Law in each direction (vertical and horizontal). • Solve for force F3. Round to 1 decimal. F2 F1

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”