A uniform 50-kgf board rests on rough supports located at A and B in the figure. The friction coefficient μs=0.60 on both contact surfaces. If a man weighing 80 kgf pulls on the rope with a force of 40 kgf, determine: a) The angles "min" minimum and "max" maximum for which the system is in equilibrium. b) The minimum coefficient of friction that must exist between the soles of the man's shoes and the soil for each of the cases in section a.
A uniform 50-kgf board rests on rough supports located at A and B in the figure. The friction coefficient μs=0.60 on both contact surfaces. If a man weighing 80 kgf pulls on the rope with a force of 40 kgf, determine: a) The angles "min" minimum and "max" maximum for which the system is in equilibrium. b) The minimum coefficient of friction that must exist between the soles of the man's shoes and the soil for each of the cases in section a.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A uniform 50-kgf board rests on rough supports located at A and B in the figure. The
friction coefficient μs=0.60 on both contact surfaces. If a man weighing 80 kgf
pulls on the rope with a force of 40 kgf, determine:
a) The angles "min" minimum and "max" maximum for which the system is in equilibrium.
b) The minimum coefficient of friction that must exist between the soles of the man's shoes and
the soil for each of the cases in section a.
Transcribed Image Text:2 m
A
2 m
B
2 m
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