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3. Two objects are connected as shown. The 12 kg cart is on a frictionless 420 incline while the 15 kg block is on a

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3. Two objects are connected as shown. The 12 kg cart is on a frictionless 420 incline while the 15 kg block is on a horizontal surface having a coefficient of friction H = 0.23. m = 15 kg H = 0.23 m, = 12 kg frictionless 42 Determine the acceleration of the system of masses. (7 marks)

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