Class 11 Physics Work Energy And Power Notes Pdf

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Work done by the force is equal to the product of the force and the displacement of the object in the direction of force. Work done by a force is zero, if a body is not displaced actually, i.

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06.Work, Energy and Power

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. The work-energy theorem states that the change in kinetic energy of a body is the workdone by the net force on the body. For a conservative force in one dimension, we may define a potential energy function V x such that. The principle of conservation of mechanical energy states that the total mechanicalenergy of a body remains constant if the only forces that act on the body are conservative.

A farmer ploughing the field, a construction worker carrying bricks, a student studying for a competitive examination, an artist painting a beautiful landscape, all are said to be working. Somebody who has the capacity to work for hours a day is said to have large stamina or energy. Being aware of the topics and sub-topics of this chapter will help you in preparing well for the exam. The aim of this chapter is to develop an understanding of the three physical quantities- Work, Energy, and Power. Let us have a revision of this chapter from the notes given as follows:. Work: In Physics, work is said to be done when the body is displaced actually through some distance in the direction of the applied force. However, if there is no displacement in the direction of the applied forced, no work is said to be done.

Physicswallah Typed Notes. Physicswallah Handwritten Notes. Chapter Formula. HC Verma Solutions. Lect Introduction, Work Formulae.

Class 11 Physics Revision Notes for Chapter 6 - Work, Energy and Power

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. Mechanical energy is of two types: Kinetic energy and Potential energy. For an object of mass m and having a velocity v, the kinetic energy is given by: K.

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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.

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Chapter 2: Unit and Measurement

Этот прибор он купил в магазине электроники, оплатив покупку наличными, чтобы сохранить анонимность. Никто лучше его не знал, как тщательно следило агентство за своими сотрудниками, поэтому сообщения, приходящие на этот пейджер, как и отправляемые с него, Стратмор старательно оберегал от чужих глаз. Сьюзан опасливо огляделась. Если до этого Хейл не знал, что они идут, то теперь отлично это понял. Стратмор нажал несколько кнопок и, прочитав полученное сообщение, тихо застонал. Из Испании опять пришли плохие новости - не от Дэвида Беккера, а от других, которых он послал в Севилью. В трех тысячах миль от Вашингтона мини-автобус мобильного наблюдения мчался по пустым улицам Севильи.

Когда он влетел во вращающуюся дверь, прозвучал еще один выстрел. Стеклянная панель обдала его дождем осколков. Дверь повернулась и мгновение спустя выкинула его на асфальт. Беккер увидел ждущее такси. - Dejame entrar! - закричал Беккер, пробуя открыть запертую дверцу машины. Водитель отказался его впустить.

Бринкерхофф не уходил с дороги. - Это тебе велел Фонтейн? - спросила .

Он и мысли не допускал о том, что кто-то из сотрудников лаборатории узнает о Цифровой крепости. - Наверное, стоит выключить ТРАНСТЕКСТ, - предложила Сьюзан.  - Потом мы запустим его снова, а Филу скажем, что ему все это приснилось. Стратмор задумался над ее словами, затем покачал головой: - Пока не стоит. ТРАНСТЕКСТ работает пятнадцать часов.

Ей предстояло узнать это совсем. ГЛАВА 2 На высоте тридцать тысяч футов, над застывшим внизу океаном, Дэвид Беккер грустно смотрел в крохотный овальный иллюминатор самолета Лирджет-60. Ему сказали, что бортовой телефон вышел из строя, поэтому позвонить Сьюзан не удастся.

Почти уже спустившись, Стратмор остановился, нащупывая последнюю ступеньку. Когда он ее нашел, каблук его ботинка громко ударился о кафельную плитку пола. Сьюзан почувствовала, как напряглось все его тело. Они вступили в опасную зону: Хейл может быть где угодно. Вдали, за корпусом ТРАНСТЕКСТА, находилась их цель - Третий узел.

physics notes for class 11