The system of pulleys and weights shown in the figure is in the field of gravity. Write the Lagrangian equation of type I of the system. Calculate the acceleration of each bead. m3 m1 q m2 100

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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?”