l Three forces and a moment are applied to a structural member as shown below. Replace the given force system by an equivalent resultant force and couple-moment system at A. I l 500 N l I 120m l Three forces are applied to a L-shaped structural member as shown below. Replace the given force system by a wrench force system at point P. Determine the magnitudes of the resultant force and the wrench couple- moment. Specify the point where the wrench intersects the x-y plane. 2 20 lb 40 lb 30 lb