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Title: GR9277.066
Post by: conantee on September 25, 2010, 10:32:01 PM
66. A thin uniform steel chain is 10 meters long with a mass density of 2 kilograms per meter. One end of the chain is attached to a horizontal axle having a radius that is small compared to the length of the chain. If the chain initially hangs vertically, the work required to slowly wind it up on to the axle is closest to
(A) 100 \mbox{ J}
(B) 200 \mbox{ J}
(C) 1,000 \mbox{ J}
(D) 2,000 \mbox{ J}
(E) 10,000 \mbox{ J}