CHAPTER 5 Work and Machines. DEFINITIONS Effort Force - (F e ) the force put into a machine Resistance Force - (F R ) the force moved by a machine Weight.

Slides:



Advertisements
Similar presentations
5.3 Simple Machines.
Advertisements

Simple Machines Chapter 7-Part 2.
Simple Machines.
Simple Machines There are six kinds of simple machines: 1. Inclined Plane – 2. Pulley- 3. Lever – 4. Wheel and Axle- 5. Screw – 6. Wedge - ramp top of.
Chapter 5 Machines and Mechanical Systems. Forces in Machines How do you move something that is too heavy to carry? How were the pyramids built? Simple.
Forces What is a Force? Push or Pull What does it do? Causes Motion How do we describe it? Size (magnitude) Direction.
Chapter 12 Work and Machines
Machines. Work and Power Power is the rate at which work is done Power = Work time Remember that W = Fd So, Power = Fd t Power is measured in Watts –1.
Mouse Mischief. Yes No When a machine is used to do work, the force applied by the machine is called the effort force.
Work & Machines. Topics Work and Power –Definition, Calculation, and Measurement Using Machines –Nature of Machines –Mechanical Advantage –Efficiency.
What is mechanical advantage?
Simple Machines Machines Lever Inclined plane Pulley Screw Wedge Wheel & axle.
Simple Machines Device that makes doing work easier is a machine Machines increase applied force and/or change direction of applied force to make work.
Simple Machines & Mechanical Advantage RHS Technology Education.
Mechanical Advantage.
February 23, 2025 Do Now: Read through the Lever Lab directions and answer the first three questions Find the weight in Newtons of the gravel container.
Work and Machines Chapter 5 Sec 2. What is a Machine?  Any device that makes work easier.
Section 2 Simple Machines.
Work & Power How the world works….. Define / Describe WORK Work is done when a force causes an object to move in the direction that the force is applied.
CONSTRUCTIVE THOUGHTS Simple Machines 7.2. Six Types of Simple Machines leverpulley wheel and axle inclined plane screwwedge.
5.3 Simple Machines. 6 Types  Lever Pulley Wheel and axle  Inclined Plane Screw Wedge.
S8P3. Students will investigate relationship between force, mass, and the motion of objects. c. Demonstrate the effect of simple machines (lever, inclined.
Name ________________________________ Physical Science
Simple Machines.
Simple Machines Simple Machines. Machine vs. Simple Machine Machine: Any device that makes work easier Simple Machine ◦ A device that does work with only.
Chapter 5 Work and Machines.
Chapter 5 Work and Machines
Chapter 10 Energy, Work, and Simple Machines
Chapter 12 Flash Cards 20 index cards. Work When force is exerted on an object causing it to move in the same direction Work = F x D Joule (J) = Nm.
Motion, Forces, and Energy Chapter 1: Motion. Recognizing Motion: Motion: –When an object’s distance changes relative to a frame of reference Frame of.
Mechanical Advantage Instructions
Simple Machines. I. The simple machine A. Types of Simple Machines… 1. Lever 2. Pulley 3. Wheel and axle 4. Screw 5. Wedge 6. Inclined plane.
Classification of simple machines: Simple machines are divided into two families: 1)The Lever family and 2) The inclined plane family.
REVIEW Work Power and Machines. What Is Work? Key Concepts  Work is done on an object when the object moves in the same direction in which the force.
Machine- a device that makes work easier by changing the direction or size of the force.
Mechanical Advantage The measurement of how useful a machine is to the job.
Chapter 5: Machines II. The Simple Machines Inclined Plane Lever Screw
Simple Machines. Types of Simple Machines How do machines make work easier? Machines make work easier by: multiplying the size of the force you exert.
Chapter 12 SG Review 8 th - Advanced. 1. Define Work – When you exert force on an object and it causes an object to move some distance. 2. When is work.
Work, Machines, and Energy. Work and Power  Work is done if (1) an object moves, and (2) if a force acts in the same direction that the object moves.
Work Power Simple Machines Energy. Work Work is done on an object when the object moves in the same direction in which the force is exerted. Formula:
Physical Science Chapter 5 Work and Machines 1 Note to self: Find videos.
6.3 – Simple Machines.
Work, Power, and Machines Glencoe Chapter 5. A. Work is the transfer of energy that occurs when a force makes an object move. 1. For work to occur, an.
Simple Machines Foldable
Six Simple Machines Inclined Plane Wedge Screw Lever Pulley Wheel & Axle.
ENERGY,WORK, POWER, AND MACHINES IPC Spring 2008.
Work, Machines, and Energy
Physical Science Chapter 14 Review Game. Work and Power EfficiencyMachines Mechanical Advantage 1 point 1 point 1 point 1 point 1 point 1 point 1 point.
Work, Power, and Simple Machines
Chapter 8 Work and Machines Work Simple Machines Power Simple Machines
Work and Machines  Work is a form of energy. It is the energy that it takes to cause things to move. Sometimes called Mechanical Energy. The Formula.
What is a simple machine? Section 5-1. Machines Makes work easier by changing the size of a force, the direction of a force, or the speed of a force.
Chapter 5 Machines and Mechanical Systems. Forces in Machines How do you move something that is too heavy to carry? How were the pyramids built? Simple.
Unit 2, Chapter 5 Integrated Science. Unit Two: Work and Energy 4.1 Force and Machines 4.2 The Lever 4.3 Gears and Design Chapter 4 Machines and Mechanical.
Test 6: Chapter 5 Work & Machines Honors Physical Science.
Work and Machines Chapter 5. What machines do you use in your life to help you do some type of work?
Physical Chapter Seven Simple Machines Levers Pulleys Inclined Planes Screws Wheel & Axle Wedge Compound Machines.
Simple Machines MAKE WORK EASIER TO DO! LEVERS, PULLEYS, INCLINE PLANE, SCREW, WHEEL AND AXEL, WEDGE.
Starter Directions: Match the units on the right with the correct measurement on the left. 1. F = __________________ 125 kilograms 2. m = _________________23.
Chapter 11 work and machines. Anytime that you exert a force and cause an object to move in the direction of the applied force you do _________. work.
Chapter 7 Review.
Simple Machines, Mechanical Advantage, and Work. Machines  Machines make work easier by changing direction of a force, multiplying a force, or increasing.
Machines, Machines, Machines. When a force moves an object in the direction you are pushing or pulling that object Work.
Work and Simple Machines
Chapter 6 – Work and Machines
Machines.
Chapter 5, Section 3 Notes Simple Machines.
Machines.
Chapter 8 Work and Machines.
Presentation transcript:

CHAPTER 5 Work and Machines

DEFINITIONS Effort Force - (F e ) the force put into a machine Resistance Force - (F R ) the force moved by a machine Weight is a force. F = ma (mass in kg) (acceleration of gravity) Energy - the ability to do work Measured in Joules Mechanical Advantage - the number of times a machine multiplies the force or work put into a machine

Formulas Work = Force x distance W = F x d 1 N  m = 1 Joule Power = Work / timeP = W / t 1 Watt = 1 J/s = cal/sec Efficiency = (W OUT ) / (W IN ) x 100%

Levers MA = (Length of effort arm) / (Length of Resistance arm) MA = L e / L R

Inclined Plane MA = (Length of slope) / (height of slope) MA= l / h

Wheel and Axle MA = (radius of wheel) / (radius of axle) MA = r W / r a

Gears A gear is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque Torque - a rotating force

Pulleys Fixed Pulley MA = 1 Moveable Pulley MA = L E / L R Block & Tackle MA = Number of ropes in the system

Wedges and Screws

USE YOUR NOTES TO STUDY FOR THE CH. 5 TEST WEDNSEDAY FEB 9 th TODAY’S ASSIGNMENT IS DUE MONDAY FEBRUARY 7 th

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

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