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2. A 26 g block hangs from a 350 g rotating solid disk, as shown below. If the radius of the disk is 12

2. A 26 g block hangs from a 350 g rotating solid disk, as shown below. If the radius of the disk is 12 cm, what is the speed of the block after it has dropped 55 cm starting from rest? If a disk with radius 5.0 cm is used instead, how does your answer change? M R m

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