PPT-Energy Energy is defined as the ability to do work.

Work force x distance The ability to do work Work cause a change or move an object Many types all can be changed into the other Energy Potential stored energy Position condition or composition. 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:. Work. Work is defined as the force parallel to the direction of motion times the distance.. W = F. (parallel) . . . d = F d . cos. . θ. If the direction of the force is opposite of the motion, the work is considered to be negative.. What is Energy?. Energy. is the ability to cause change.. . or….. The ability to do work.. Energy is measured in the same units (Joules) as work because energy transfers work.. Different Forms of Energy. 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. Conservation of energy . Conservative and non-conservative forces. Chapter 8: Potential Energy and Conservation of Energy. Reading assignment: Ch. 8.1 to 8.5. Homework: QQ4, QQ5, AE7, AE8, AE11, 3, 6, 7, 10, 14, 15, 16, 22, 29, 40, 63. Section 1: Work and Machines. Section 2: Describing Energy. Section 3: Conservation of Energy. Section 1: Work and Machines. Work. – the transfer of energy that occurs when a force makes an object move. Work is done when:. A . force . is exerted on an object. An object has a . displacement . in the same direction as the force. W=. Fdcos. q. SI unit for work is . Joule . (. J. ). 1 J = 1N*m (=0.7376 . You . need energy to force an object to move. You need energy to make matter change. . The . blowing wind, the warm Sun and a falling leaf are all examples of energy in use. .. . Energy makes motion and change possible.. Why not?. Does energy just disappear? No!. Law of Conservation of Energy. : energy cannot be created nor destroyed.. -energy can change forms. 1. st. Law of Thermodynamics. : energy can do work, or produce heat, but it is always conserved.. Energy transfer diagrams. Different types of energy can be transferred from one type to another. Energy transfer diagrams show . energy types in and out of a process.. Everyday Examples: Law of Conservation of Energy . . 2012. Objectives.. To define work by relating force and displacement. . To . calculate the net work done when many forces are applied to an object. . To . identify several forms of mechanical energy. . is essential for life, and is required to fuel many different body processes, growth and activities. . These include:. keeping the heart beating;. keeping the organs functioning; . maintenance of body temperature;. change. . In chemistry, energy can do . work. or produce . heat. . Energy is typically divided into two types: . potential. energy and . kinetic. energy.. Energy in general is the ability to cause a .