Work Power And Energy Notes Pdf
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Download revision notes for Work, Energy and Power class 11 Notes and score high in exams. These are the Work, Energy and Power class 11 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the the best tips recommended by teachers during exam days.
Review of Work, Energy and Power
Any force which conserves mechanical energy, as opposed to a nonconservative force. See statement of conservation of mechanical energy. Property of conservative forces which states that the work done on any path between two given points is the same. The energy of configuration of a conservative system. For formulae, see Definition of potential energy, gravitational potential energy, and Definition of potential energy given a position-dependent force.
Review of Work, Energy and Power
In these notes a brief and simple explanation of all important topics is given which will help students make an easy and quick revision of the chapter during the examinations. Though these notes we bring a brief description of the important topics from the chapter which will help you revise the whole chapter quickly and easily during exam days. At the end of the notes you can try the questions asked from the discussed set of topics. These questions will help you to assess your preparation level and get a hold on the subject. It is expressed as the product of force and displacement in the direction of force. Necessary Conditions for Work to be done.
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In physics , energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat , the object. The SI unit of energy is the joule , which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton. Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field gravitational , electric or magnetic , the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns , the radiant energy carried by light, and the thermal energy due to an object's temperature. Mass and energy are closely related. Due to mass—energy equivalence , any object that has mass when stationary called rest mass also has an equivalent amount of energy whose form is called rest energy , and any additional energy of any form acquired by the object above that rest energy will increase the object's total mass just as it increases its total energy.
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Further, they are all designed with the latest academic year subject material so that any difference in the syllabus is accounted for as well. By studying from these NCERT Physics Chapter 6 Work, Energy and Power Notes for class 12 and employing sample papers, students will no difficulty be able to alleviate any tension before exams as they will be fully prepared in advance for their board exams. Together, students will be prepared to answer every type of question like subjective and objective and aim for the best in their last year of school. SelfStudys provides chapter-wise Physics Chapter 6 Work, Energy and Power revision notes as well as short keynotes for the CBSE board examination in an easy to understand and also free downloadable PDF format so students can practice it for their studies and get good marks in their board examinations.
It is measured by the product of the force and the distance moved in the direction of the force, i. The work done W by the agent is the product of the component of force in the direction of displacement and the magnitude of displacement. The negative sign indicates that the direction of the spring force is opposite to x, the displacement of the free-end. Anything which is able to do work is said to possess energy. Energy is measured in the same unit as that of work, namely, Joule.
Дэвид говорит по-испански, он умен, ему можно доверять, к тому же я подумал, что оказываю ему услугу. - Услугу? - бурно отреагировала Сьюзан. - Послать его в Испанию значит оказать услугу. - Да. Я заплачу ему десять тысяч долларов за один день работы.