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Since the floor is rough, it exerts both a normal force N1 and a frictional force f1...

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Physics

Since the floor is rough, it exerts both a normal forceN1 and a frictional forcef1 on the ladder. However, since the wall isfrictionless, it exerts only a normal force N2on the ladder. The ladder has a length of L = 4.1 m, aweight of WL = 58.5 N, and restsagainst the wall a distance d = 3.75 m above the floor. Ifa person with a mass of m = 90 kg is standing on theladder, determine the following.

(a) the forces exerted on the ladder when the person is halfwayup the ladder (Enter the magnitude only.)

N1=

N2=

F1=

(b) the forces exerted on the ladder when the person isthree-fourths of the way up the ladder (Enter the magnitudeonly.)

N1=

N2=

F1=

Answer & Explanation Solved by verified expert
4.1 Ratings (512 Votes)
a Angle made by the ladder with horizontal    See Answer
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