Sol:sin(55°) = 0.82;cos(55°) = 0.57(1) the force which the wall exert on the ladder is only the normal force.(2) by the force balance equation.N = G1 + G2 = 1300N,by the moment balance equation.NL =...第一題的意思是求那個normal force,另第三題的答案是什么？N1 = G1 = 500N.
第三問在前面，N = 1300N第一問答案好像不對，應與摩擦力相等，已明白
A uniform ladder 7.10mlong weighing 500Nrests with one end on the ground and the other end against a perfectly smooth ve
A uniform ladder 7.10m long weighing 500N rests with one end on the ground and the other end against a perfectly smooth vertical wall.The ladder rises at 55.0∘ above the horizontal floor.A 800N painter finds that she can climb 2.95m up the ladder,measured along its length,before it begins to slip.
What force does the wall exert on the ladder?
Find the friction force that the floor exerts on the ladder
Find the normal force that the floor exerts on the ladder.
What force does the wall exert on the ladder?
Find the friction force that the floor exerts on the ladder
Find the normal force that the floor exerts on the ladder.
英語人氣：857 ℃時間：2020-02-05 06:16:48
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