{\rm cm} diameter stone is? f the stone loses 10% of its speed in 10 {\rm s} of grinding, what is the force with which the man presses the knife against the stone?
that is all is there, no more details
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11-11-2010, 04:08 AM #1
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A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35
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