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Rod AB has a mass of 2.7 kg and is attached at A to a 4.5 kg cart C. Knowing that the system is released from rest when θ = 45 degrees and neglecting friction, Determine the velocity of the cart and the velocity of end B of the rod for values of θ =45 degrees and θ = -90 degrees. And the θ for which velocity of the cart to the left is maximum

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