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Physics, 12.07.2019 21:10 Damagingawsomeness2
Adisc-shaped grindstone with mass 50 kg and diameter 0.52m rotates on frictionless bearings at 850 rev/min. an ax is pushed against the rim (to sharpen it) with a normal force of 160 n. the grindstone subsequently comes to rest in 7.5 seconds. what is the co-efficient of friction between ax and stone?
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Adisc-shaped grindstone with mass 50 kg and diameter 0.52m rotates on frictionless bearings at 850 r...
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