Work Work is done when a force is exerted on an object and the object moves a distance x. Work = force ·distance W = F · d units: N·m = Joule Work is.

Slides:



Advertisements
Similar presentations
Chapter 10: Work, Energy, and Simple Machines
Advertisements

Chapter 5 Work and Machines.
Work and Power Notes. What is work ?  The  The product of the force applied to an object and the distance through which that force is applied.
Work and Kinetic Energy. Work Done by a Constant Force The definition of work, when the force is parallel to the displacement: (7-1) SI unit: newton-meter.
Section 5-1. Work – Section 5-1 Definition of Work Ordinary Definition : To us, WORK means to do something that takes physical or mental effort. ◦ Ex:
Work.
Unit 5-1: Work and Power. Work When we were looking at force, we observed that an objects motion is related to how the force acts and how long it acts.
Chapter 7 Work and Kinetic Energy. Units of Chapter 7 Work Done by a Constant Force Kinetic Energy and the Work-Energy Theorem Work Done by a Variable.
Work, Power, & Efficiency
Wednesday, 12/10/14PHYSICS If you do the same old things, you get the same old results!
Work and Energy Conservation Law Work and Energy Work is a force applied to an object that causes the point of application of the force to move through.
Work and Power Notes. Work is done when a net force acts on an object and the object moves in the direction of the net force. Work is the product of the.
Work and Power Work is the transfer of energy that results from applying a force over a distance –if nothing moves, no work was done unit of measurement.
Work W = the transfer of energy E W = Work done ___ a system ____________ its total energy. Work done ___ a system ____________ its total energy box pile.
In this chapter you will:  Recognize that work and power describe how the external world changes the energy of a system.  Relate force to work and explain.
Work & Power.
Work, Power, and the Basics of Energy. Work Work – Exerting force in a way that makes a change in the world. Throwing a rock is work: you’re exerting.
Power! We’ve talked about “work”, now let’s talk about “power”
POWER Power – Power = P = ___=___ Units = ( ) = ____ = ___ Sample Problem: A crane lifts an 8000 N beam 75 m to the top of a building in 30 s. How much.
Work What is work? Is the product of force and distance. When a force acts on an object in the direction the object moves. Some of the force has to cause.
Work and Power Chapter 5. Work Work is done when a force causes a displacement in the direction of the force W = Fd (force and displacement parallel)
ENERGY Notes and Key Concepts. Work  An object’s motion is related to both force and how the force acts.  The quantity force X time = impulse  The.
Chapter 14 Work, Power and Simple Machines Do work, son!
Work, Kinetic Energy, and Power. v f 2 = v i 2 + 2ad and F = ma v f 2 -v i 2 = 2ad and F/m = a v f 2 -v i 2 = 2(F/m)d Fd = ½ mv f 2 – ½ mv i 2 Fd = Work.
Work and Power. What does work mean to you? In physics, work has a very specific meaning. It is the action to make things change Work= force x distance.
Lesson 5.4 Power Essential Question: How do you calculate power?
Energy Part 6 - Power.
POWER The rate at which work is done The rate at which work is done The amount of work done in a unit of time The amount of work done in a unit of time.
9 Energy Energy can change from one form to another without a net loss or gain.
AIM: How do we define and calculate work and power? OBJ: Given notes and activity sheet SWBAT define and calculate work and power with 70% accuracy DN:
Chapter 14 Work, Power, and Machines Physical Science.
Bell Work: Work Intro. Work and Power Work  Work is a force causing something to move a distance.  Work = force x distance  W=f x d  Units for work:
 Energy, Work and Simple Machines  Chapter 10  Physics I.
Work and power And you. Work = Force x parallel displacement = F x d Units of Work = Joules = N x m.
Copyright © 2010 Pearson Education, Inc. Lecture Outline Chapter 7 Physics, 4 th Edition James S. Walker.
Hasn’t it ALL been work so far? Mr. Fox’s 8 th Grade Science Class.
Chapter 13 Energy and Work Section 4 Power. Power Power is the rate at which work is done or the amount of work done in a unit of time. Power is the rate.
+ Work and Power Chapter Definitions Energy: the ability to produce a change on an object or its environment Work: the process of changing energy.
Energy and Work. Energy  Energy – the ability to produce a change in itself or the environment.  If an objects position is changing, that may indicate.
Work, Power, & Energy.
Chapter-6 Work, Power, Energy
Definitions The scientific definition of work is a force exerted over a distance (work = force · distance) work - The scientific definition of energy is.
Work, Power, and Efficiency
Work, Power Problems Answers
Work Physics Ms. Li.
Work and Power Chapter 4.
Work, Power & Energy.
WORK, POWER, & EFFICIENCY
What Is Work? Chapter 12 Section 1.
What is work ? The product of the force applied to an object and the distance through which that force is applied.
How to calculate a dot product
Power In which situation would you tire more quickly?
Work and Power Work is done when a force is exerted on an object and the object moves a distance x. Work = force ·distance W = F · d units: N·m = Joule.
Chapter-6 Energy and Oscillations
Aim: How do we explain the concept of power?
Lecture Outline Chapter 7 Physics, 4th Edition James S. Walker
Work is only done by a force on an
Work Power Energy.
WORK AND POWER WORK AND POWER.
Power Power is the amount of work applied over a period of time
Work and Power.
The Work Energy Principle Part 6
Power.
Physical Science Work and Power.
What is work Chapter 4 section 1.
Concept of Work.
Chapter 8 – Work and Energy
Work.
Sci. 4-1 Work and Power Pages
Work & Power.
Presentation transcript:

Work Work is done when a force is exerted on an object and the object moves a distance x. Work = force ·distance W = F · d units: N·m = Joule Work is a scalar quantity. For work to be done, Force exerted must be in same linear plane as distance.

Work When you hold something, are you exerting a force on the object? When you hold something, are you doing work? If you set the object on a table, does the table exert a force on the object? Does the table do any work? Yes. No. Yes. No. When you hold something, then, you are not doing work either.

Work

Work Work is only done by a force on an object if the force causes the object to move in the direction of the force.

Work When a force is applied at an angle, use the component of the force in the direction of motion. W = Fcosq(Dx)

Work Example 5A p.169

POWER P = W/t = FDd/t = Fv Power: the rate at which work is done. Unit: J/s = W (watt) 1 kilowatt (kW) = 1000 W 1 horsepower (hp) = 746 watts Horsepower (hp): power produced by a typical British working horse.

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.