Force balance on pulley requires diagram for cable directions Steps:

• Identify tensions: frictionless pulley implies equal tension T on both cable sides; load of 180 N suggests T = 180 N if one side vertical.
• Determine directions: one cable likely vertical to load; other direction unspecified without diagram.
• Compute R: pulley force on cable is magnitude of vector sum of two T vectors; direction along jib implies bisector alignment, but angle between cables unknown.
• Resolve: without diagram showing second cable angle, cannot calculate numerical R.

Not enough information.

Final answer: Not enough information.