Two crates A and B shown are supported by an inextensible cable on frictionless and massless pulleys. The mass of the heavier crate A is 37 kg. when free to move, the acceleration of A with respect to B, aA/B = 6m/s/s. Determine the mass of crate B in kg. The pulley shown in P9 is supported by a single chain at C. Determine the tension in this chain in N when the two crates described in P9 are free to move.

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