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
