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A uniform ladder stands on a rough floor and rests against a frictionless wall as shown...

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Physics

A uniform ladder stands on a rough floor and rests against africtionless wall as shown in the figure. 2 58 1 Since the floor isrough, it exerts both a normal force N1 and a frictional force f1on the ladder. However, since the wall is frictionless, it exertsonly a normal force N2 on the ladder. The ladder has a length of L= 4.5 m, a weight of WL = 63.5 N, and rests against the wall adistance d = 3.75 m above the floor. If a person with a mass of m =90 kg is standing on the ladder, determine the following.

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

N1 = ____ N

N2 = ____ N

f1 = ____ N

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

N1 = ____ N

N2 = ____ N

f1 = ____ N

Answer & Explanation Solved by verified expert
4.0 Ratings (778 Votes)
aN1Normal force from floor on ladderN2Normal force from wall on ladderf1 Frictional force from floor on ladderhsqrtL2d2 sqrt4523752 25 mBy Newtons 2nd law along    See Answer
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