3D Vectors Example (Part 2)
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Video Lecture 8 of 83
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Date Added: July 17, 2015

### Lecture Description

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This video, continuation of the previous video 1.8, very first demonstrates the key objective to add the unit component vector to get the resultant vector. The video step by step shows how to add unit vectors discretely at x, y and z axes followed by the addition operation of all three unit vectors to obtain the resultant vector over the 3D reference frame. Doing so, the video explains the addition of vectors having negative magnitude in value.

Moving on, the video briefly shows how to obtain the resultant vector absolute magnitude applying the formula introduced in earlier video and subsequently elaborates how to do angle calculation to get the resultant vector direction in 3D reference space. Later, the video shows the procedure to get unit vector of the obtained resultant vector. Overall, the video tries to give a brief inside to clear the concept of 3-D vector operation in 3-D reference space. Don’t forget to do on hand practices to have a strong basic on vectors which is required to understand many areas of engineering mechanics.

### 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.