only type answer ( need for my project submit) (There is a coefficient of friction μ between m1 and the incline plane.) Answer the questions for both scenarios: The block slides UP ; The block slides DOWN. Draw free body diagrams for both masses. Derive an equation for the acceleration of the system. Derive an equation for the tension in the string.

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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?”