The post is made of Douglas fir and has a diameter of 70mm . If it is subjected to the load of 20kN and the soil provides a frictional resistance that is uniformly distributed along its sides of w = 3kN/m , determine the force at its bottom needed for equilibrium. Neglect the weight of the post.
Force = 14kN
what is the displacement of the top of the post A with respect to its bottom B ?