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In this tutorial, the video shows another workout example of Hooke’s law and stress vs. strain. Very first, the video overviews the example where it has given that the column length is 3.5 m and it gets shortened by 0.03 m when subjected to a load of F. The video asks to find the magnitude of the load F. The modulus of elasticity of the column material has been given as 40 MPa & the diameter of the column is 200 mm. The video, moving next, briefly talks about the procedures to solve the problem starting with FBD to AFD to use the method of sections cut to calculate the unknown values.
Using the given value of column length and shortened length of the column when subjected to load, the video shows how to find the value of strain. Moving on, the video uses the obtained strain value and given modulus of elasticity to determine the value of stress developed on the column member. Later, the video uses the average normal stress formula to find out the value of axial load F that causes the length contraction. Do on hand practices with this tutorial to have better understanding on the workout example overviewed in this lesson.
Mechanics, the study of forces and physical bodies, underpins a very large proportion of all forms of engineering. A thorough understanding of mechanics is essential to any successful engineer. This course helps develop an understanding of the nature of forces with consideration for how they may be simplified in an engineering context. The conditions of equilibrium are then used to solve a number of problems in 2D and 3D before moving on to a broad range of topics including centroids, distributed loads, friction and virtual work. The course will also provide an introduction to dynamics, with a particular focus on the effects that forces have upon motion.