PPT-ENERGY, WORK

amp SIMPLE MACHINES t he n ature of Energy Energy the ability to cause change Forms of energy include Electrical Chemical Thermal Radiant Kinetic Energy energy in the form of . 4. th. form IGCSE. Chapter 17 in textbook (p. 142). Reminder: work and energy. In the back of your book:. Define what is meant by . work. . and . energy. List different . forms of energy. N.B.:. NOT fuels…. 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?. 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.. 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 . Homework:. Read . pages 257 – 260 . Answer questions p 261 # 1, 2, 3. P 262 #5, 6, 7, 8. Recall. :. A change in an object’s . momentum. is related to the amount of . time. a . force. acts on an object.. Chapter 8. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 8-1. Potential Energy. Potential energy. . (symbol = . U. ) . is . energy . (Joules!). Associated . with . configuration. 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. 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).. People can conserve. Large percentage savings possible, but each individual has small total impact. Industry can conserve. Larger potential impact because of scale.. Datacenters are estimated to use 2 to 4% of the electricity in the United States. . Work Energy and Momentum Physics Unit 3 This Slideshow was developed to accompany the textbook OpenStax Physics Available for free at https:// openstaxcollege.org/textbooks/college-physics By OpenStax 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: