3. Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes (see Figure 2). (a) Which way will the system move when the blocks are released from rest? (b) What is the acceleration of the blocks? (c) What is the tension in the cord? *

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Q: Units er

A: Refer attachment

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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?”