A rope is wrapped over a 6 cm diameter pipe to support a bucket of tools. The coefficient of friction between the rope and the pipe is 0.20. The combined mass of the bucket and the tools is 100 kg. a.) What force "F" is being applied to the free end of the rope if the bucket of tools is on the verge of being "lifted" by this force? b.) What force "F" is being applied to the free end of the rope if the bucket of tools is on the verge of being "lowered" by this force? μ = 0.20 20° bucket 100 kg r-3 cm Ans. Part a.) 1440 N Part b.) 668 N

A rope is wrapped over a 6 cm diameter pipe to support a bucket of tools. The coefficient of friction between the rope and the pipe is 0.20. The combined mass of the bucket and the tools is 100 kg. a.) What force "F" is being applied to the free end of the rope if the bucket of tools is on the verge of being "lifted" by this force? b.) What force "F" is being applied to the free end of the rope if the bucket of tools is on the verge of being "lowered" by this force? μ = 0.20 20° bucket 100 kg r-3 cm Ans. Part a.) 1440 N Part b.) 668 N

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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