Скачать или смотреть Work and Energy Science Physics Chapter 11 CBSE (NCERT) Class 9 (IX) Science

Work and Energy
This is the video of the eleventh chapter (Chapter 11) of Class 9 Science – Work and Energy

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The topics that are covered in this video are listed here: We first learn what is Work where we also understand why there is Not much work in spite of working hard. We also see the Scientific conception of work. Then, we do a quantitative approach and derive the Work done by a constant force. After finishing with work we delve into the topic of Energy. Here, we see the examples of Forms of Energy and study in detail Kinetic Energy and Potential Energy. Then we also see the Potential energy of an object at a height. After studying various forms of energy we answer the question Are various energy forms inter-convertible. We then move on to a very important concept of the Law of conservation of energy and we end the video with the concept of Rate of doing work, that is, Power.

Apart from these topics you can also gain an additional understanding of some topics related to this chapter like: Zero work, Conservative forces, Work – Energy theorem, Torque, force-couple, Work done by gravity, Work done by variable force, Mechanical energy, Gravitational potential energy, elastic potential energy, Mass-energy equivalence, Ergs, calories, kilocalories, BTU, kilowatt hours, ATP, Dark energy, Transformation of energy, First law of thermodynamics, etc., Average power, Instantaneous power, Mechanical power, Electrical power, Radiant power, etc.

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