Question: Crate B has a mass m and is released from rest when it is on top of cart A, which has a mass 3m. Determine

Crate B has a mass m and is released from rest when it is on top of cart A, which has a mass 3m. Determine the tension in cord CD needed to hold the cart from moving while B is sliding down A. Neglect friction. D C B

D C B

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