Chapter 2, Problem 3P

Resolve the forces F1=6 kN and F2=6 kN into components acting along the u and v axes and determine the magnitudes of the components. The angles are given as 01=26, 02=89 and 03=52. F1 F2 |(F)ul= kN (F)y = kN (F2)u = kN (F2)y = kN

1. If the resultant force acting on the hook is FR = { -115 i + 643 j + 139 k } lb, determine the magnitude of the force FR in lb.

Three chains act on the bracket in such a way as to generate a resultant force of 2224 N. If two of the chains are subjected to known forces (P1 and P2) as shown in the figure, determine the orientation Ѳ of the third chain, measured clockwise, from the positive x axis, so that the magnitude of the force, F, on this chain is minimal. All forces lie in the x - y plane. What is the magnitude of F? TIP: First find the resultant of the two known forces, the force F acts in this direction. Note: P1 = 400 lb and P2 = 300 lb