Engineering mechanics 13th edition Hibbler 8.59P

Question

a)

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= 0.25 and μCB= 0.35 respectively. Neglect the weight and size of the wedge and the thickness of the beam.

b)

If P =0, is the wedge self-locking?

Answer 1

Draw the free body diagram of the beam:

Draw the free body diagram of the wedge: