Problem Graphic

Engineers need to test the wing of a new aircraft before actual flight testing. To simulate the lift force during flight, a hydraulic jack applies a force of 4,500 lb at on the wing.

What is known:

  • The wing weight is 165 lb/ft.
  • The wing length is 54 ft.
  • The hydraulic point load is 4,500 lb, and is located 49 ft from the wing root.

Force Diagram


    What is the maximum shear and bending moment for this loading condition?

  • Replace the distributed wing weight load with an equivalent point load.
  • Determine the reactions for the equivalent system.
  • Develop the shear and moment diagrams with the distributed load in place.
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