4- A 2.5 kg mass on a 16.3° ramp is connected to a hanging 2 kg mass using massless pulley and string. The coefficient of kinetic friction between the 2.5 kg mass and the plane is 1/6. Find (a) the acceleration of the blocks and (b) the tension in the string. m₁ = 2.5 kg 16.3⁰ M₂=2.0 kg

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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?”