Question

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. Assume the wall at B is smooth. The center of gravity for the man is at G. Neglect the weight of the ladder.

Determine the inclination θ of the ladder if the coefficient of static friction between the friction pad A and the ground is μs = 0.3.

--UE VOL 9 YAN

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Answer #1

COR loft 180 lb th Efy zo NA-160 50 NA= 180 ubi F FA=0.3NA tamaro 180 x (lo coo) – 013 (180 x 10 Smo) – 180 x 320. coo - 013

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