Question

A uniform ladder stands on a rough floor and rests against a frictionless wall as shown in the figure. N2 mg d N. Since the floor is rough, it exerts both a normal force N, and a frictional force f, on the ladder. However, since the wall is frictionless, it exerts only a normal force N, on the ladder. The ladder has a length of L wall a distance 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. 4.60 m, a weight of W, 70.0 N, and rests against the (a) the forces exerted on the ladder when the person is halfway up the ladder (Enter the magnitude only.) N2 N N (b) the forces exerted on the ladder when the person is three-fourths of the way up the ladder (Enter the magnitude only.) N N2 N

Answer 1

2 sin SMATO ng und 20559.6 470 4h cash.6 -N₂ 3.7570 90 (9.8) 4.6 20554.64 70 4.6 20154.6 -1₂ 3.75 Ny = 338.234 Furo F-N250 FIEN,= 338.234 d=3,757 EFG=0 Nong - 7020 Ni-90(9.8)- 7020 Ni = 952 N at 31 then 3 (66) = 3.45 SMAO 90 (9.8 (3.45 cosy. 8) + 70 46 cas 54.6.-N₂ 3.750 H2=494.922N EF 20 Fr-M₂0 Fi= Me=494.qun Elgo & Hi-90 (9.8) - 70 20 My 9552 N