PPT-Unit 4: Work, Power, and Energy

Unit 4 Work Power and Energy I Work When a force acts upon an object to cause a displacement of the object it is said that work was done upon the object There are three key ingredients to work. Energy. The capacity of vigorous activity. The ability to act. The capacity of a body or a system to do work. (and heat). . . Mechanical Energy. Kinetic + Potential. E = U+K. . h. Chemical Energy:. Jamie,. . Tommy, Jordan. Work. W= F(. cosθ. )d . OR. W= . FΔr. . cosθ. Work Example. A person pulls a toboggan for a distance of 35.0 m along the snow with the rope directed 25.0° above the snow. The tension in the rope is 94.0 N. (a) How much work is done on the toboggan by the tension force? (b) How much work with the same tension parallel to the snow?. Topics Covered. Energy Resources and Consumption. Energy Concepts. Energy Forms. Power. Units. Conversions. Laws of Thermodynamics. Energy Consumption. History. Industrial Revolution. Exponential Growth. In text: Ch 5. Do you already know these words?. Work – . Energy – . Power – . 2.3.1 Outline . what is meant by work.. First a demo:. One volunteer. Hold a couple of books and walk across the room.. Work . = W. The product of the force . F . applied to an object over a distance . d . in which the object travels as a result of the force. Joule . (J) . is the base unit of work. (Force and distance must be parallel to each other). Energy. The capacity of vigorous activity. The ability to act. The capacity of a body or a system to do work (and heat). . . Mechanical . Energy: Kinetic . + Potential. h. Use directly for hydro . energy storage . Lecture slides by. Mehmet . Kanoglu. Copyright © The McGraw-Hill Education. Permission required for reproduction or display.. Thermodynamics: An Engineering Approach . 8th . Edition. Yunus A. . Ç. engel, Michael A. Boles. IPC Spring . 2014. Energy, Work, Power & Machines. 1. Energy. is the ability to do work. .  . Potential energy. – stored energy or energy due to position.  . PE=m g h . m. is mass (kg). g. Principles of Engineering. Work. . Work. (symbol . W. ) is the energy transferred when a force . F. is applied to an object moving through a . distance . d. .. The SI . unit of work or . energy is the joule (symbol J).. Principles of Engineering. Work. . Work. (symbol . W. ) is the energy transferred when a force . F. is applied to an object moving through a . distance . d. .. The SI . unit of work or . energy is the joule (symbol J).. Energy, Work, & Power SP3. Students will evaluate the forms and transformations of energy. a. Analyze, evaluate, and apply the principle of conservation of energy and measure the components of work-energy theorem by Vocab. Energy – the ability to do work or cause change. Motion – an object’s position changes relative to another object. Force – a push or pull. Work – when the force exerted is in the same direction as the motion. Reminders about work and energy. 1 joule is equivalent to the energy required for a force of exactly 1 newton to act through a distance of exactly 1 . mete. r. Principle of conservation of energy. : energy cannot be created nor destroyed; it can only be transformed from one type to another.. POLITEKNIK KOTA BHARU . KM 24 KOK LANAS . 16450 KETEREH KELANTAN.  .  . ET1O1 ELECTRICAL TECHNOLOGY.  . INTRODUCTION.  . ET101 Electrical Technology course introduces students to the principles of Operation of DC electrical circuit. It covers the fundamental laws, theorems and circuit techniques. It also cover cell and batteries, magnetic and electromagnetic circuit..