A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 30-cm-diameter stone
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A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 30-cm-diameter stone is spinning at 200 rpm and has a mass of 28 kg. The coefficient of kinetic friction between the knife and the stone is 0.20. If the stone loses 10% of its speed in 10s of grinding, what is the force with which the man presses the knife against the stone?
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To find the force with which the man presses the knife against the stone we can use the principles of circular motion and Newtons second law Well need ...View the full answer
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Related Book For
College Physics A Strategic Approach
ISBN: 9780321595492
2nd Edition
Authors: Randall D. Knight, Brian Jones, Stuart Field
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