25 lessons on Physics of Work, Power & Energy (AP Physics)

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25 lessons on Physics of Work, Power & Energy (AP Physics)
MP4 | Video: AVC 1280x720 | Audio: AAC 44KHz 2ch | Duration: 2.5 Hours | Lec: 25 | 457 MB
Genre: eLearning | Language: English

Physics is not difficult, it just needs some time, focus and a good teacher

This course includes 25 videos totaling 2.5 hours of run time that you can learn online. Get a deep understanding of physics of-

Work done by a force - In physics, work and energy can get confusing if not understood at a conceptual level. This lesson introduces you to this in a very simple way and lays foundation of this topic

What exactly is negative and positive work - Is it confusing to find when is work done by a force negative or positive? It indeed can be. Learn in this chapter how the dot product of force and displacement can give you the value of work done by the force and also if it is negative or positive.

Work kinetic energy theorem - Change in kinetic energy can be equated with the work done on the body. This is often expressed as the work kinetic energy theorem and is one of the most popular theorems in physics. Watch this lesson to understand how you can use this theorem to solve a lot of numerical problems.

Work done by gravitational force and spring force - What is the work done by gravitational force on a body? The simple answer is the dot product of force and displacement. This physics video lecture explains how this force actually does work on a body, negative or positive. The lesson also explores the work done when a mass is lifted up and brought down. This is explanation has been done using work energy theorem. It also explains why using this theorem is better than using Newton's laws of motion (often used in physics) in solving certain kinematic problems

Work done by a variable force - spring force is a good example of defining what is work done by a variable force. For this spring this force F = -kx where the force varies as a linear function of displacement x. So far you have been finding work done by a force as a dot product of force and displacement where the force is constant. So this is an interesting lesson in the sense that here we will be dealing with forces that are variable in nature and how we can find work done by this variable force when it displaces a mass. We use differential calculus and integral calculus to establish this formula of physics

   

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