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61. A heavy chain of length 1 m and weight 20 kg hangs vertically with one end attached to a peg and carries a block of mass 10 kg at the other end. Find the workdone in winding 50 cm of chain round the peg. |
| Answer» 61. A heavy chain of length 1 m and weight 20 kg hangs vertically with one end attached to a peg and carries a block of mass 10 kg at the other end. Find the workdone in winding 50 cm of chain round the peg. | |