I really need help with this question. I have one more attempt to get it correct. Make sure you can clearly see the question. Make sure you write or type out the answers clearly so I can see it.

A uniform ladder stands on a rough floor and rests against a frictionless wall as shown in the figure. N1 b Since the floor is rough, it exerts both a normal force N, and a frictional force fi on the ladder. However, since the wall is frictionless, it exerts only a normal force N2 on the ladder. The ladder has a length of _ = 4.50 m, a weight of W = 55.5 N, and rests against the 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. (a) the forces exerted on the ladder when the person is halfway up the ladder (Enter the magnitude only.) N1 = 937.5 VN 588.6 X N2 = Determine a good point about which to sum the torques and then see if you can apply the condition for rotational equilibrium about that point that will allow you to determine #2, the normal force exerted on the ladder by the wall. You may need to use your knowledge of trigonometry to determine the angle between the ladder and the floor, N 468.8 F1= 1x See if you can apply the condition for translational equilibrium to horizontal forces acting on the ladder in order to obtain a relationship between f, and N, and hence determine fj . N (b) the forces exerted on the ladder when the person is three-fourths of the way up the ladder (Enter the magnitude only.) N1 = 237.5 N 882.9 N2 X Using the point specified in part (a) as the point about which to sum the torques, see if you can apply the condition for rotational equilibrium that will allow you to determine My, the normal force texertedcori the ladder by the wall. N 882.9 f1 = See if you can apply the condition for translational equilibrium to horizontal forces acting on the ladder in order to obtain a relationship between f, and W, and hence determine f . N Go to Settings to activate Windows. Additional Materials