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CP Two blocks connected by a light horizontal rope sit at rest on a horizontal, frictionless surface. Block A has mass 15.0 kg, and block B has mass m. A constant horizontal force F = 60.0 N is applied to block A (Fig. P4.40). In the first 5.00 s after the force is applied, block A moves 18.0 m to the right, (a) While the blocks arc moving, what is the tension T in the rope that connects the two blocks? (b) What is the mass of block B?
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