Simple Machines. Simple machines: Reduce the effort (force multiplier)

Slides:



Advertisements
Similar presentations
How do they relate to work and energy?
Advertisements

How do machines work?.
5.2 Using Machines.
SIMPLE MACHINES \\Sv0002\stares$\Middle School\Science\Gr. 8\ \Quarter 4\Simple Machines\Videos.
How Machines Do Work Outline Notes Pages
The Simple Machines Screw Wedge Inclined Plane Pulley Wheel and Axle
Simple Machines.
Integrated Science Unit 2, Chapter 4.
Work Work happens when a force moves an object over a distance.
1. Levers and Linkages Definition:
ENGR 107 – Introduction to Engineering
Section 10.2 Machines  Objectives
#1UNIT D The amount by which a machine can multiply a force.
Simple Machines Machines Lever Inclined plane Pulley Screw Wedge Wheel & axle.
Chapter Nine: Simple Machines
Mechanical Advantage How much does an inclined plane, screw, wedge, pulley or lever really help you?
Mechanical Advantage.
Sections 8.4 to 8.7.  Any object in motion is capable of doing work.  This is because a moving object has kinetic energy  Kinetic energy depends on.
Mechanical Advantage and Efficiency
Chapter machines Machines A device used to multiply forces or simply to change the direction of forces.
Vocabulary of Instruction:
Machines Section 10.2 Physics. Objectives Demonstrate knowledge of why simple machines are useful. Communicate an understanding of mechanical advantage.
MACHINES and EFFICIENCY
Pulley.
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.
Machines and Mechanical Advantage Archimedes (Greek mathematician, 287 to 212 B.C.) said, “Give me a place to stand and I will move the Earth,” meaning.
Do Now Write a one-paragraph answer in your science journal to the following question: Why do we use machines?
Mechanical advantage The number of times a force exerted on a machine is multiplied by the machine Mechanical advantage (MA). = resistance force effort.
1 Pulley = = = = 1 = Mechanical Advantage E1 Pulling Lifting Effort
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 Nine: Simple Machines  9.1 Types of Simple Machines  9.2 Mechanical Advantage  9.3 Levers in the Human Body.
Work Power Energy. Work Concepts Work (W) ~ product of the force exerted on an object and distance the object moves in the direction of the force. Work.
Chapter No. 01 Simple Machines
Chapter 8: Conservation of Energy & Simple Machines
Mechanical Advantage vs. Mechanical Efficiency
Chapter Nine: Simple Machines
HOW TO READ A CHAPTER.
Simple Machines Device that makes doing work easier is a machine
2.0 An understanding of mechanical advantage and work helps in determining the efficiency of machines In this section you will learn how a machine can.
Sci. 4-2 What is a Machine? Pages
Simple machines - Levers
Chapter Nine: Simple Machines
Machines Chapter 15.
Advantages to Simple Machines
Chapter 12 Work and Energy
Simple Machines Quiz.
Simple Machines Physics Mr. Berman.
WORK, POWER, & EFFICIENCY
WORK, POWER, & EFFICIENCY
REVIEW 1. Be able to tell what a machine does for us.
Topic 2.1 – Machines Make Work Easier
Efficiency and Mechanical Advantage
Mechanical Advantage Simple Machines.
Simple Machines Physics Mr. Berman.
What is the mechanical advantage of a machine?
Mechanical Advantage and Efficiency
Mechanical Advantage Simple Machines.
SIMPLE MACHINES! PULLEY!.
Machines make work easier.
Levers Lever is a simple machine that allows you to gain a mechanical advantage in moving an object or in applying a force to an object.
Chapter Nine: Simple Machines
Mechanical Advantage Simple Machines.
Work is the transfer of energy to an object by using a force that causes the object to move in the direction of the force. * Work is measured is Joules.
Group Members First Names
Levers Lever is a simple machine that allows you to gain a mechanical advantage in moving an object or in applying a force to an object.
Using Machines.
Mechanical Advantage and Efficiency
Key Question: What is a simple machine?
Principles of Lifting Machines
Presentation transcript:

Simple Machines

Simple machines: Reduce the effort (force multiplier)

Simple machines: Reduce the effort (force multiplier) Change point of application of effort to a convenient point

Simple machines: Reduce the effort (force multiplier) Change point of application of effort to a convenient point Change the direction of effort

Simple machines: Reduce the effort (force multiplier) Change point of application of effort to a convenient point Change the direction of effort Produce a gain in speed

Simple machines: Reduce the effort (force multiplier) Change point of application of effort to a convenient point Change the direction of effort Produce a gain in speed

Load Effort Mechanical advantage, M.A. = Load (L) Effort (E) L > E - M.A. > 1 – force multiplier E > L - M.A. < 1 – gain in speed E = L - M.A. = 1 – changes direction of effort (no change in force/speed) Units Technical terms

Velocity ratio, V.R. = Velocity of effort (V E ) Velocity of load (V L ) V.R. = d E /t d L /t V.R. = d E d L d E > d L – V.R. > 1 – force multiplier d L > d E – V.R. < 1 – gain in speed d L = d E – V.R. = 1 – changes direction of effort (no change in force/speed) Units Technical terms

Work input Work output MachineEffort Load Work input Work output

Technical terms Work input Work output MachineEffort Load Work input Work output

Technical terms Work input Work output MachineEffort Load Work input Work output

Technical terms Work input Work output MachineEffort Load Work input Work output Efficiency, η =

Technical terms Work input Work output MachineEffort Load Work input Work output Efficiency, η = Units

Technical terms Effort point Load point Input energy Output energy Principle of a machine Relation between M.A., V.R. and η

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

© 2024 SlidePlayer.com Inc. All rights reserved.