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The figure shows two 1.0 kg blocks connected by a rope. A second rope hangs beneath the lower block. Both ropes have a mass of 250 g. The entire assembly is accelerated upward at by force . What is the tension at the top end of rope 1?

11 N

22 N

9.3 N

26 N

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Mass below top end of rope= Mass of B+ Mass of ropes 1 and...