Find the coefficient of friction between ax and grindstone

Reference no: EM1367169

Q. Two negative point charges are separated by 20 rm cm and feel a mutual repulsive force of 3.35 mu N. The charge of one is three times that of the other. How much charge does each have?

Q. A grindstone in the shape of a solid disk with diameter 0.529 m and a mass of 50 kg is rotating at 850 rev/min. You press an ax against the rim with a normal force of 160 N, and the grindstone comes to rest in 7.50 s.

Find out the grindstone's angular acceleration in rad/s2.

Find out the coefficient of friction between the ax and the grindstone.

Reference no: EM1367169

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