Cantilever Free Body Diagram Example
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Video Lecture 23 of 83
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### Lecture Description

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The key objective of this video is to consider support reactions for a fixed support. At first, the video refers previous video where the support conditions for pin and roller supports are overviewed and thereafter wants to look at what happens in fixed supports in this tutorial. The video, then, displays a cantilever beam subjected to a point load of 20 N at free edge of the beam in downward direction. The length of the beam has given as 3 m. Next, using the given information, the video shows how to draw the FBD illustrating what reactions and momentum have been caused by the fixed support.

Moving on, the video calculates the moment at cantilever support point developed by the point load subjected to the cantilever beam. The fixed support must have to be strong enough to withstand the calculated momentum in order to ensure that the beam will not rotate when subjected to the given amount of point load. Later, the video shows how to determine the reactions forces exerted by fixed support using the principle of equilibrium. At end, the video explains the scenario of moment effect over the cantilever beam pointing out the rotating condition of the given beam.

### Course Description

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.