Chapter 4, Problem 145P

Replace the three forces acting on the bent pipe by a single equivalent force R. Specify the distance d from point O to the point on the x-axis through which the line of action of R passes: 50 lb 40 lb 10 10" 10" 60 lb

The boat is to be pulled onto the shore using two ropes. If the resultant force is to be 80 KN, directed along the direction of the boat, determine the magnitudes of forces T and P acting in each rope and the angle θ of P so that the magnitude of P is a minimum. T acts at 30o .

The turnbuckle is tightened until the tension in the cable AB equals 2.7 kN. Determine the vector expression for the tension T as a force acting on member AD. Also find the magnitude of the projection of T along the line AC. 3.1 m D B A 4.9 m 1.2 m 1.7 m