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-2. A block hangs from a string wrapped on a disc of radius 20 cm free to rotate about its axis which iaISfixed in a horizontal position. If the angular speed of the disc is 10 rad/s at some instant, with whaspeed is the block going down at that instant ?(A) 4 m/s(B) 3 m/s(C) 2 m/s(D) 5 m/s |
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