Question

Q3: 20 kN The post is made of Douglas fir and has a diameter of 100 mm. If it is subjected to the load of 20 kN and the soil provides a frictional resistance distributed around the post that is triangular along its sides; that is, it varies from w0 at y-0 tow 12 kN/m at y-2m, determine the force F at its bottom needed for equilibrium. Also, what is the displacement of the top of the post A with respect to its bottom B? Neglect the weight of the post. 12 kN/m Hint isolate the upper segment of the post cut at arbitrary distance y through equilibrium, find a function for internal zxial force Py), then do integral

Answer 1