8-59 If the beam AD is loaded as shown, determine the horizontal force P which must be applied to the wedge in order to remove it from under the beam. The coefficients of static friction at the wedge's top and bottom surfaces are μCA = 0.25and μCB = 0.35, respectively. If P = 0, is the wedge self-locking?Neglect the weight and size of the wedge and the thickness of the beam.