1177450865

# 1177450865 - HW Chapter 10 10.6 In Fig. 10.42, the forces...

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HW Chapter 10 10.6 In Fig. 10.42, the forces A , B , C , and D each have magnitude 50 N and act at the same point on the object. a) What torque (magnitude and direction) does each of these forces exert on the object about point P? b) What is the total torque about point P? Fig. 10.42 10.13 A grindstone in the shape of a solid disk with diameter 0.520 m and a mass of 50.0 kg is rotating at 850 rev/min. You press an ax against the rim with a normal force of 160 N (Fig. 10.44), and the grindstone comes to rest in 7.50 s. Find the coefficient of friction between the ax and the grindstone. You can ignore friction in the bearings. Fig. 10.44 10.16 A 15.0-kg bucket of water is suspended by a rope wrapped around a windlass, that is a solid cylinder 0.300 m in diameter with mass 12.0 kg. The cylinder pivots on a frictionless axle through its center. The bucket is released from rest at the top of a well

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and falls 10.0 m to the water. You can ignore the weight of the rope. a) What is the tension in the rope while the bucket is falling? b) With what speed does the bucket strike
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## This note was uploaded on 09/08/2008 for the course PHYS 4A taught by Professor D.v during the Spring '07 term at Evergreen Valley.

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1177450865 - HW Chapter 10 10.6 In Fig. 10.42, the forces...

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