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The objectives of this video tutorial are to discuss about work and energy followed by completing a problem involving the concepts of work & energy. First of all, the video discusses on work & energy introducing the formula of finding work done in terms of initial and final kinetic energy of a system. Basically, the energy of a system should remain constant; however, if it does change with reference to time then it means work is done to the system. Next, the video points out the facts that often final and initial energy is given and it has asked to find the work done or vice versa.
Moving on, the video presents an exemplary problem of racing car where the driver is speeding to a corner at 200 km/hr and applied the brakes. It has asked to calculate the work done by the brakes in slowing the car if the car has entered to the corner at 60 km/hr & the mass of the car is 1000 kg. The video, then, briefly shows how to assess required values to give input to the introduced formula to finally calculate down the value of work done by the brakes in slowing the car.
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.