Answer Happy

= = A uniform beam of length L 2.55 m and mass M = 68 kg is resting on a horizontal surface at angle 0 = 40°. A cable is attached to the upper end of the beam at one end and to a vertical wall at the other end. The cable and the beam form a right angle (as shown in the figure). The upper end of the beam is a vertical height H above the horizontal surface. The beam is in equilibrium; it does not slip on the horizontal surface due to the static friction force between the surface and the beam. Draw a free-body diagram of the beam (showing all forces acting on the beam) prior to answering the following: (a) Find the tension in the cable (in N). Additional question (with separate answer box below, and which must have a detailed solution included in submitted work): (b) If the beam is on the verge of slipping (if the static friction force is the maximum it can be), what is the coefficient of static friction between the horizontal surface and the beam? H