Discovering Newtons Laws

Information about Discovering Newtons Laws

Published on April 29, 2009

Author: ankush85

Source: authorstream.com

Content

Newton’s Laws of Motion : Newton’s Laws of Motion Background : Background Sir Isaac Newton (1643-1727) an English scientist and mathematician famous for his discovery of the law of gravity also discovered the three laws of motion. He published them in his book Philosophiae Naturalis Principia Mathematica (mathematic principles of natural philosophy) in 1687. Today these laws are known as Newton’s Laws of Motion and describe the motion of all objects on the scale we experience in our everyday lives. Slide 3: “If I have ever made any valuable discoveries, it has been owing more to patient attention, than to any other talent.” -Sir Isaac Newton Newton’s Laws of Motion : Newton’s Laws of Motion An object in motion tends to stay in motion and an object at rest tends to stay at rest unless acted upon by an unbalanced force. Force equals mass times acceleration (F = ma). For every action there is an equal and opposite reaction. Newton’s First Law : Newton’s First Law An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an unbalanced force. What does this mean? : What does this mean? Basically, an object will “keep doing what it was doing” unless acted on by an unbalanced force. If the object was sitting still, it will remain stationary. If it was moving at a constant velocity, it will keep moving. It takes force to change the motion of an object. What is meant by unbalanced force? : What is meant by unbalanced force? If the forces on an object are equal and opposite, they are said to be balanced, and the object experiences no change in motion. If they are not equal and opposite, then the forces are unbalanced and the motion of the object changes. Some Examples from Real Life : Some Examples from Real Life Two teams are playing tug of war. They are both exerting equal force on the rope in opposite directions. This balanced force results in no change of motion. A soccer ball is sitting at rest. It takes an unbalanced force of a kick to change its motion. Newton’s First Law is also called the Law of Inertia : Newton’s First Law is also called the Law of Inertia Inertia: the tendency of an object to resist changes in its state of motion The First Law states that all objects have inertia. The more mass an object has, the more inertia it has (and the harder it is to change its motion). More Examples from Real Life : More Examples from Real Life A powerful locomotive begins to pull a long line of boxcars that were sitting at rest. Since the boxcars are so massive, they have a great deal of inertia and it takes a large force to change their motion. Once they are moving, it takes a large force to stop them. On your way to school, a bug flies into your windshield. Since the bug is so small, it has very little inertia and exerts a very small force on your car (so small that you don’t even feel it). If objects in motion tend to stay in motion, why don’t moving objects keep moving forever? : If objects in motion tend to stay in motion, why don’t moving objects keep moving forever? Things don’t keep moving forever because there’s almost always an unbalanced force acting upon it. A book sliding across a table slows down and stops because of the force of friction. If you throw a ball upwards it will eventually slow down and fall because of the force of gravity. Slide 12: In outer space, away from gravity and any sources of friction, a rocket ship launched with a certain speed and direction would keep going in that same direction and at that same speed forever. Newton’s Second Law : Newton’s Second Law Force equals mass times acceleration. F = ma Acceleration: a measurement of how quickly an object is changing speed. What does F = ma mean? : What does F = ma mean? Force is directly proportional to mass and acceleration. Imagine a ball of a certain mass moving at a certain acceleration. This ball has a certain force. Now imagine we make the ball twice as big (double the mass) but keep the acceleration constant. F = ma says that this new ball has twice the force of the old ball. Now imagine the original ball moving at twice the original acceleration. F = ma says that the ball will again have twice the force of the ball at the original acceleration. More about F = ma : More about F = ma If you double the mass, you double the force. If you double the acceleration, you double the force. What if you double the mass and the acceleration? (2m)(2a) = 4F Doubling the mass and the acceleration quadruples the force. So . . . what if you decrease the mass by half? How much force would the object have now? What does F = ma say? : What does F = ma say? F = ma basically means that the force of an object comes from its mass and its acceleration. Something very small (low mass) that’s changing speed very quickly (high acceleration), like a bullet, can still have a great force. Something very small changing speed very slowly will have a very weak force. Something very massive (high mass) that’s changing speed very slowly (low acceleration), like a glacier, can still have great force. Newton’s Third Law : Newton’s Third Law For every action there is an equal and opposite reaction. What does this mean? : What does this mean? For every force acting on an object, there is an equal force acting in the opposite direction. Right now, gravity is pulling you down in your seat, but Newton’s Third Law says your seat is pushing up against you with equal force. This is why you are not moving. There is a balanced force acting on you– gravity pulling down, your seat pushing up. Think about it . . . : Think about it . . . What happens if you are standing on a skateboard or a slippery floor and push against a wall? You slide in the opposite direction (away from the wall), because you pushed on the wall but the wall pushed back on you with equal and opposite force. Why does it hurt so much when you stub your toe? When your toe exerts a force on a rock, the rock exerts an equal force back on your toe. The harder you hit your toe against it, the more force the rock exerts back on your toe (and the more your toe hurts). Review : Review Newton’s First Law: Objects in motion tend to stay in motion and objects at rest tend to stay at rest unless acted upon by an unbalanced force. Newton’s Second Law: Force equals mass times acceleration (F = ma). Newton’s Third Law: For every action there is an equal and opposite reaction. Vocabulary : Vocabulary Inertia: the tendency of an object to resist changes in its state of motion Acceleration: a measurement of how quickly an object is changing speed

Related presentations


Other presentations created by ankush85

Nanotechnology
03. 04. 2009
0 views

Nanotechnology

Human Resource Management System
06. 03. 2009
0 views

Human Resource Management System

Nanotechnology
27. 03. 2009
0 views

Nanotechnology

INTRODUCTION TO NANOTECHNOLOGY
20. 11. 2009
0 views

INTRODUCTION TO NANOTECHNOLOGY

Nanotechnology in Sports
22. 11. 2009
0 views

Nanotechnology in Sports

Computer Architecture
14. 07. 2009
0 views

Computer Architecture

HR
18. 03. 2009
0 views

HR

Hospital Management System
08. 04. 2009
0 views

Hospital Management System

Welcome to Visual Basic
06. 03. 2009
0 views

Welcome to Visual Basic

HTML
20. 04. 2009
0 views

HTML

Computer Languages
03. 06. 2013
0 views

Computer Languages

Taking Care of Computer
03. 06. 2013
0 views

Taking Care of Computer

Understanding Camera
16. 10. 2012
0 views

Understanding Camera

Photography Technical Terms
25. 09. 2012
0 views

Photography Technical Terms

Basics of Photography
25. 09. 2012
0 views

Basics of Photography

AIR MUSCLES
03. 01. 2012
0 views

AIR MUSCLES

Molecular Nanotechnology
24. 11. 2009
0 views

Molecular Nanotechnology

Nanotech Innovation
22. 11. 2009
0 views

Nanotech Innovation

FINANCIAL  MARKET
16. 05. 2009
0 views

FINANCIAL MARKET

Operating System
19. 04. 2009
0 views

Operating System

Management Control
10. 07. 2009
0 views

Management Control

Accounting Principles
01. 07. 2009
0 views

Accounting Principles

Balance Sheet
21. 07. 2009
0 views

Balance Sheet

Balance Sheet Auditing
01. 07. 2009
0 views

Balance Sheet Auditing

BRANCH AND BOUND
05. 03. 2009
0 views

BRANCH AND BOUND

THE  THREE  BRANCHES  OF GOVERNMENT
13. 06. 2009
0 views

THE THREE BRANCHES OF GOVERNMENT

Structure of Atom
11. 05. 2009
0 views

Structure of Atom

Compression Techniques
05. 03. 2009
0 views

Compression Techniques

DYNAMIC PROGRAMMING
06. 03. 2009
0 views

DYNAMIC PROGRAMMING

Quantum Mechanics
25. 08. 2009
0 views

Quantum Mechanics

Marketing Plan
19. 06. 2009
0 views

Marketing Plan

Book Keeping
24. 06. 2009
0 views

Book Keeping

DFDS
02. 10. 2008
0 views

DFDS

Semiconductors
25. 04. 2009
0 views

Semiconductors

Organic  Chemistry
28. 04. 2009
0 views

Organic Chemistry

Atoms Molecules and Ions
17. 06. 2009
0 views

Atoms Molecules and Ions

Covalent Bond
25. 04. 2009
0 views

Covalent Bond

Cost Accounting Standards
25. 06. 2009
0 views

Cost Accounting Standards

Crisis Management
19. 06. 2009
0 views

Crisis Management

Marketing
18. 03. 2009
0 views

Marketing

Business Strategy
27. 04. 2009
0 views

Business Strategy

Time Management
23. 03. 2009
0 views

Time Management

Networking Protocols
23. 05. 2009
0 views

Networking Protocols

Network Layer
23. 05. 2009
0 views

Network Layer

Final Accounts
24. 06. 2009
0 views

Final Accounts

ARTIFICIAL  INTELLIGENCE
03. 04. 2009
0 views

ARTIFICIAL INTELLIGENCE

Play with C
08. 04. 2009
0 views

Play with C

Software Development Cycle
23. 03. 2009
0 views

Software Development Cycle

THE GREEDY METHOD
06. 03. 2009
0 views

THE GREEDY METHOD

JOB SEQUENCING
06. 03. 2009
0 views

JOB SEQUENCING

Electricity and Magnetism
29. 04. 2009
0 views

Electricity and Magnetism

Optical Fiber
24. 05. 2009
0 views

Optical Fiber

Quality Assurance
06. 03. 2009
0 views

Quality Assurance

Object-oriented Design
11. 04. 2009
0 views

Object-oriented Design

A.R. Rahman
08. 03. 2009
0 views

A.R. Rahman

Hollywood Female Celebrities
13. 03. 2009
0 views

Hollywood Female Celebrities

Flow nets
04. 09. 2009
0 views

Flow nets

Energy and Nanotechnology
22. 11. 2009
0 views

Energy and Nanotechnology

LOGIC  DESIGN
06. 03. 2009
0 views

LOGIC DESIGN

VB-IDE
06. 03. 2009
0 views

VB-IDE

DLF IPL FINAL
25. 05. 2009
0 views

DLF IPL FINAL

MINIMUM SPANNING TREES
06. 03. 2009
0 views

MINIMUM SPANNING TREES

CPU Scheduling
05. 03. 2009
0 views

CPU Scheduling

Virtual Memory
05. 03. 2009
0 views

Virtual Memory

POK
09. 05. 2009
0 views

POK

2D Transformations
05. 03. 2009
0 views

2D Transformations

Greedy Algorithms
05. 03. 2009
0 views

Greedy Algorithms

BACKTRACKING
05. 03. 2009
0 views

BACKTRACKING

DIVIDE And CONQUER
06. 03. 2009
0 views

DIVIDE And CONQUER

ELEMENTARY DATA STRUCTURES
06. 03. 2009
0 views

ELEMENTARY DATA STRUCTURES

JPEG Compression
06. 03. 2009
0 views

JPEG Compression

Mpeg-compression
06. 03. 2009
0 views

Mpeg-compression

NP - HARD
06. 03. 2009
0 views

NP - HARD

TRAVELLING SALESPERSON PROBLEM
06. 03. 2009
0 views

TRAVELLING SALESPERSON PROBLEM

VBA Introduction
06. 03. 2009
0 views

VBA Introduction

Introduction to Java
09. 03. 2009
0 views

Introduction to Java

Java  Basics
09. 03. 2009
0 views

Java Basics

Heuristic Search
13. 03. 2009
0 views

Heuristic Search

HSM
19. 03. 2009
0 views

HSM

Tata's  Nano  Car
25. 03. 2009
0 views

Tata's Nano Car

Air Cranes
08. 04. 2009
0 views

Air Cranes

Newborn Care
10. 04. 2009
0 views

Newborn Care

Photosynthesis Process
10. 04. 2009
0 views

Photosynthesis Process

ActionScript
13. 04. 2009
0 views

ActionScript

Xml
15. 04. 2009
0 views

Xml

Snakes mis use
17. 04. 2009
0 views

Snakes mis use

Php Web Development
21. 04. 2009
0 views

Php Web Development

Cricket Intro
21. 04. 2009
0 views

Cricket Intro

Cricket Umpiring and Rules
21. 04. 2009
0 views

Cricket Umpiring and Rules

Arm and Forearm
23. 04. 2009
0 views

Arm and Forearm

Elements Ions Isotopes
25. 04. 2009
0 views

Elements Ions Isotopes

Chemical Bond
25. 04. 2009
0 views

Chemical Bond

FreeFall
29. 04. 2009
0 views

FreeFall

Digital photography
26. 04. 2009
0 views

Digital photography

Health Effects of Alcohol
26. 04. 2009
0 views

Health Effects of Alcohol

Poetry Terminology
27. 04. 2009
0 views

Poetry Terminology

Indian Force
05. 05. 2009
0 views

Indian Force

Machine Intelligence
14. 05. 2009
0 views

Machine Intelligence

Data Link Layer
16. 05. 2009
0 views

Data Link Layer

Database Development Cycle
15. 05. 2009
0 views

Database Development Cycle

Queue
15. 05. 2009
0 views

Queue

Presentaion Skills
23. 04. 2009
0 views

Presentaion Skills

Network Layers
23. 05. 2009
0 views

Network Layers

Narmada Dam, India
23. 05. 2009
0 views

Narmada Dam, India

User Datagram Protocol
24. 05. 2009
0 views

User Datagram Protocol

Linear Momentum
28. 05. 2009
0 views

Linear Momentum

Stack and Queue
04. 06. 2009
0 views

Stack and Queue

Information Management
19. 06. 2009
0 views

Information Management

Role of Senior Management
19. 06. 2009
0 views

Role of Senior Management

Wake Up India
07. 06. 2009
0 views

Wake Up India

Adobe Flex 3.0
13. 06. 2009
0 views

Adobe Flex 3.0

Adobe Flex Presentation
13. 06. 2009
0 views

Adobe Flex Presentation

Introduction to Adobe Flex
13. 06. 2009
0 views

Introduction to Adobe Flex

Adobe Flash Media Server
13. 06. 2009
0 views

Adobe Flash Media Server

Dreamweaver
13. 06. 2009
0 views

Dreamweaver

Adobe Flash
13. 06. 2009
0 views

Adobe Flash

Flash CS4 Professional
13. 06. 2009
0 views

Flash CS4 Professional

Adobe Flash Lite
13. 06. 2009
0 views

Adobe Flash Lite

Digital Camera
13. 06. 2009
0 views

Digital Camera

Mozilla_Firefox
15. 06. 2009
0 views

Mozilla_Firefox

Managerial Accounting
27. 06. 2009
0 views

Managerial Accounting

Accounting  Information  System
01. 07. 2009
0 views

Accounting Information System

RETAILING AND MARKETING
06. 07. 2009
0 views

RETAILING AND MARKETING

ACCOUNTING IN BUSINESS
05. 07. 2009
0 views

ACCOUNTING IN BUSINESS

STRATEGIC RETAIL MANAGEMENT
05. 07. 2009
0 views

STRATEGIC RETAIL MANAGEMENT

Reiki
01. 08. 2009
0 views

Reiki

Using Buttons in PowerPoint
26. 04. 2009
0 views

Using Buttons in PowerPoint

Nanotechnology  for  Students
21. 08. 2009
0 views

Nanotechnology for Students

NANOSCIENCE
25. 08. 2009
0 views

NANOSCIENCE

Fundamentals of Nanoscience
27. 08. 2009
0 views

Fundamentals of Nanoscience

Nanoscience in Nature
27. 08. 2009
0 views

Nanoscience in Nature

Applied Mechanics
04. 09. 2009
0 views

Applied Mechanics

Accounts Payable Training
27. 06. 2009
0 views

Accounts Payable Training