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In this tutorial, the video demonstrates different types of supports e.g., pin, roller and fixed support. When a number of forces are acting on a body and the body is supported on another body then the 2nd body exerts a force known as reactions on the first body at the points of contact so that the first body is in equilibrium. The second body is known as support and the force, exerted by 2nd body on the first body, is known as support reactions. Moving on, the video briefly discusses on three types of supports commonly found in the construction of different structural elements.
A pin support can resist both horizontal & vertical force but not a moment. It only allows a member to rotate but not to translate in any direction. Whereas a roller support is free to rotate & translate along the surface upon which the roller rests and a fixed support can resist both the horizontal and vertical forces as well as moment. Last part of the video illustrates an exemplary frame having pin, roller and fixed supports explaining all the facts and figures in greater details.
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.