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02-24-2008, 12:57 AM
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| PHYSICS help!!!!! Work and energy!?
A 104 N sack of grain is hoisted to a storage room 46 m above the ground floor of a grain elevator. I know the amount of work done is 4784, but how to calculate the increase in potential energy of the sack of grain at this height? and also: The rope being used to lift the sack of grain breaks just as the sack reaches the storage room. What kinetic energy does the sack have just before it strikes the ground floor?      |
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