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Two 100 g blocks hang at the ends of a l...

Two 100 g blocks hang at the ends of a light flexible cord passing over a small frictionless pulley. A 40 g block rests on the block an right and removed after 2 sec.
(a) How far will each block move in the first second after the 40 g block is removed?
(b) What was the tension in the cord before the 40 g block was removed?
(c) What was the tension in the cord supporting the pulley after the 40 g block was removed?

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