Question
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
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 23 kg. The coefficient of kinetic friction between the knife and the stone is 0.20.
If the stone loses 10% of its speed in 10 s of grinding, what is the force with which the man presses the knife against the stone?
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Physics
Authors: David Young, Shane Stadler
10th edition
1118486897, 978-1118836873, 1118836871, 978-1118899205, 1118899202, 978-1118486894
