What Is Work? Chapter 12 Section 1.

Slides:



Advertisements
Similar presentations
Work Work is done only when a force moves an object.
Advertisements

Chapter 10: Work, Energy, and Simple 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.
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.
Notes on Chapter 8 Work & Energy
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.
Physical Science Coach Kelsoe Pages 410–440 C HAPTER 14: W ORK, P OWER, AND M ACHINES.
Key Concepts  When is work done on an object?  How do you determine the work done on an object?  What is power? Key Terms  Work  Joule  power.
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.
 Every day we do work. Many days we also don’t do work.  Work is defined as a the product of force and the distance the object moves. Work = Force ×
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.
Chapter 14 Work, Power and Simple Machines Do work, son!
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Work, Power, and Machines Objectives Define work and power.
The BIG idea Energy is transferred when a force moves an object. Work and Energy Work is the use of force to move an object. 4.1 Energy is transferred.
In your notebooks – define the terms work and joule. You do not have to do a vocabulary square on them. They can be found in chapter 12, sec. 1. February.
Lesson 5.4 Power Essential Question: How do you calculate power?
Section 1Work and Energy Chapter 13. Section 1Work and Energy What Is Work? 〉 How is work calculated? 〉 Work is calculated by multiplying the force by.
Unit 3 Lesson 1 Work, Energy, and Power
8 th Grade Science. * Examples anyone? * Consider this: Before coming to school this morning you probably put your books in your backpack. You lifted.
Chapter 14 Work, Power, and Machines. Section 1 Work and 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.
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:
“Do Now” for Wednesday! Draw a balanced and an unbalanced force. Illustrate the net force in each drawing.
Work and Power. What is force? A force is a push or a pull.
Chapter 4.1- Work & Power. What is Work?  For work to occur two things must happen:  Work is done when an object moves in the same direction in which.
POWER Power What is power and how is it calculated? If you consider the amount of time it takes to do a particular amount of work, you are now talking.
Chapter 14 Work, Power, and Machines Physical Science.
Chapter 5 Matter In Motion Section 4 – Gravity: A Force of Attraction pp
Section 14 Work, Power, and Energy. More Power!!!!! What does he mean?
What is WORK? A – The Meaning of Work 1 – Work – is done on an object when the object moves in the SAME direction in which the force is exerted. Example:
Copyright © 2010 Pearson Education, Inc. Lecture Outline Chapter 7 Physics, 4 th Edition James S. Walker.
Work and Power Chapter 13.1 Notes. What is work? Work is done only when force is applied to an object AND the object moves in the same direction as the.
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 May 18, Think about it….. You are sitting on your bed doing your homework. Are you doing work?
Work  Work occurs when: 1.An object moves when a force is applied 2.The direction of the objects motion is the same as the direction of the force Formula:
Unit 2 Lesson 1 Work, Energy, and Power
Lesson 9 Power of a Motor.
Work, Power, and Efficiency
POWER.
Chapter 6 Work and Machines
Work and Power Chapter 4.
What is Work? Work – The product of force and distance when a force moves an object a distance. In order for you to do work on an object, the object must.
WORK, POWER, & EFFICIENCY
Chapter 12, Section 1: What is work?
Lecture Outline Chapter 7 Physics, 4th Edition James S. Walker
April 20, 2010 Explain why holding a large box is not considered work.
Work, power, and machines
Machines - Work Power Energy.
Work and Mechanical Advantage
Work Power Energy.
Power Power is the amount of work applied over a period of time
Goal 7 Work and Mechanical Advantage
Laws of Motion and Energy
W O R K.
Physical Science Work and Power.
What is work Chapter 4 section 1.
Work.
Work and Machines: Work
Warm-Up 10/24/13 Complete the table below by looking at pg in the textbook Figure Direction of Force Direction of Motion 1 2A 2B 2C.
Work.
Sci. 4-1 Work and Power Pages
Work & Power.
Unit 2 Lesson 1 Work, Energy, and Power
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.
Physical Science Chapter 5
Presentation transcript:

What Is Work? Chapter 12 Section 1

The Meaning of Work Work is the force exerted on an object that causes it to move. Work is done on an object when the object moves in the same direction in which the force is exerted.

No Work Without Motion To do work on an object, the object must move some distance as a result of your force. If the object does not move, no work is done, no matter how much force is exerted.

Force in the Same Direction To do work on an object, the force you exert must be in the same direction as the object’s motion.

Calculating Work The amount of work you do depends on both the amount of force you exert and the distance the object moves. The amount of work done on an object can be determined by multiplying force times distance.

Calculating Work Work = Force x Distance SI unit for work is newton x meter (N·m) This unit is also called a joule (J) One joule is the amount of work you do when you exert 1 newton to move an object a distance of 1 meter.

Power Power is the rate at which work is done. Power equals the amount of work done on an object in a unit of time.

Power A device that has more power than another device does more work in the same time. or A device that has more power than another device can do the same amount of work in less time.

Calculating Power Power is calculated by dividing the amount of work done by the amount of time it takes to do the work. Power = Work = Force x Distance Time Time

Power Units SI unit of power is J/s This is also known as the watt (W) One joule of work done in one second is one watt of power.

Other Units 1000 watts(W) = 1 kilowatt (kW) 1 horsepower (hp or HP) = 746 watts (W)

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

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