Two 2.00 kg blocks are connected by a rope. A second rope hangs beneath the lower block. Both ropes have a mass of 0.450 kg. accelerated upward at 2.30 m/s2 by force F. local acceleration due to gravity is -9.80 m/s2, what is F? What is tension in top end of rope 1? What is tension in bottom end of rope 1?

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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?”