Problem 4-14/4-15/4-16/ Engineering Mechanics Materials.

Engineering Mechanics problem with solution
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4–14. The post is made of Douglas fir and has a diameter of 60 mm. If it is subjected to the load of 20 kN and the soil provides a frictional resistance that is uniformly distributed along its sides of w = 4 kN/m , 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.

4–15. The post is made of Douglas fir and has a diameter of 60 mm. If it is subjected to the load of 20 kN and the soil provides a frictional resistance that is distributed along its length and varies linearly from w = 0 at y = 0 to
w = 3 kN/m at y = 2 m, 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.

4–16. The hanger consists of three 2014-T6 aluminum alloy rods, rigid beams AC and BD , and a spring. If the hook supports a load of
P = 60 kN, determine the vertical
displacement of F . Rods AB and CD each have a diameter of 10 mm, and rod EF has a diameter of 15 mm. The spring has a
stiffness of k = 100 MN/m and is unstretched when P = 0.

[oziicem]

Yeah thx for the peaceful guitar but i didnt get the solution