8-16 Friction (Ladder Problem) - Chapter 8 | Hibbeler Statics 14th ed | Engineers Academy

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Engineering Statics by Hibbeler 14th Edition
Chapter 8: Friction

8–16. The 180-lb man climbs up the ladder and stops at the
position shown after he senses that the ladder is on the verge
of slipping. Determine the inclination u of the ladder if the
coefficient of static friction between the friction pad A and the
ground is ms = 0.4. Assume the wall at B is smooth. The center
of gravity for the man is at G. Neglect the weight of the ladder.

8–17. The 180-lb man climbs up the ladder and stops at the
position shown after he senses that the ladder is on the verge
of slipping. Determine the coefficient of static friction
between the friction pad at A and ground if the inclination of
the ladder is u = 60 and the wall at B is smooth. The center
of gravity for the man is at G. Neglect the weight of the ladder.

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