Force. Objective Use the equation: net force = mass x acceleration.

Slides:

Advertisements

Similar presentations

P2 Additional Physics.

Advertisements

Force Diagrams and Calculations More Math!!!. Force Diagram 1 Are the forces acting on this object balanced or unbalanced? What is the net force acting.

Do Now: 1. Draw a free body diagram (all the forces) acting on a water skier being pulled by a boat. 2. What is the net force acting on this object?

Chapter Six: Laws of Motion

Newton’s 2 nd Law Of Motion By Mr. Yum. Newton’s 2 nd Law Newton’s 2 nd Law is defined as: Newton’s 2 nd Law is defined as: F = m x a Where, F = force,

2.4: Newton’s Second Law of Motion What if... If you kept increasing the amount of applied force on an object, would its acceleration increase or decrease?

Forces. Forces Forces - LOs (a) Solve problems using the relationship: net force = mass x acceleration (F = ma) appreciating that acceleration and.

Statics (ENGR 2214) Prof S. Nasseri What you need to know from Physics! ENGR 2214.

Mrs. Border’s Science Class. Essential question The size of air resistance force depends on what two variables?

NEWTON’S SECOND LAW OF MOTION Law of Acceleration.

Newton’s second law of motion

 Calculate the acceleration that this object experiences 30 kg 150 N.

Newton’s second law Pg. 19 in NB

Ch. 8.2 Acceleration and Force

Objectives Solve orbital motion problems. Relate weightlessness to objects in free fall. Describe gravitational fields. Compare views on gravitation.

Motion and Force Chapter Twelve: Distance, Time, and Speed Chapter Thirteen: Forces Chapter Fourteen: Force and Motion.

Part 4 Newton’s Second Law of Motion Newton’s Second Law Acceleration is the rate at which your velocity (speed with direction) changes.

Chapter 4 - Laws of Motion

A) When your car suddenly comes to a halt, you lunge forward

Force A push or pull exerted on an object..

Define forces as pushes or pulls which can cause objects to ; speed up, slow down, change direction.

JP © 1 2 WHEN FORCES ARE NOT BALANCED A RESULTANT FORCE CHANGES A BODY’S VELOCITY.

Warm Up Explain how weight, matter, mass, and gravity are related? What units are used for Force? Explain the concept of Inertia (use an example or 2)

Honors Physics Newton’s Second Law of Motion.  Newton’s First Law explains the results of zero net external force. –The body stays at rest or moves with.

Objectives Investigate the relationship between mass, force, and acceleration. State Newton’s second law and give examples to illustrate the law. Solve.

Weight: More Practice Enter very large or very small numbers into your calculator using the EXP button: EXP -26.

Newton’s 1 st Law Inertia. Force Anything capable of changing an object’s state of motion Any push or pull Causes object to speed up, slow down, or change.

Newton’s 2 nd Law Physics October 25/26. Objectives 1.State the relationship between acceleration, mass and net force 2.Evaluate how the relationship.

Newton’s Second and Third Laws Chapter 4 Section 3.

Force and motion Objectives When you have competed it, you should

SPH3U – Unit 2 Gravitational Force Near the Earth.

 Newton’s Second Law can be expressed with an equation:  Which can be re-arranged to isolate Force like this:

Dynamics Newton’s Laws. A force is a physical quantity that can affect the motion of an object. Since a force has magnitude, direction, and a point of.

3) Look at diagram “Q”. What is the independent variable in this experiment? A. Solution conductivity B. water C. distance D. Acid concentration The answer.

Chapter 18 Test Review. What is a reference point? The object that stays in place in relation to a moving object.

Homework Read pages 96 – 101 Answer practice problems

Speeding up and slowing down f = ma Terminal velocity.

Forces Year 11 GCSE Physics Module 11. Starter  What is the unit of measurement of a force?  How fast is a cat travelling who covers 30m in 5s?  What.

Newton’s 2 nd Law of Motion F = ma. Second Law of Motion This law states the net force of an object is equal to its mass times acceleration The equation.

Newton’s Second Law of Motion. 2 nd Law of Motion  The net (total) force of an object is equal to the product of its acceleration and its mass.  Force.

Newton’s 1 st Law: More Practice.

Physics Unit 2 Jeopardy ConversionsNewton’s 1 st Law Calculation Acceleration F = ma Lab stuff

Ch. 6 – Newton’s 2 nd Law of Motion – Force & Acceleration I. Review of Previous Information A. Changes in motion (acceleration) are caused bya force!!

Forces Chapter 6.1. What You Already Learned Velocity is the ratio of the change in position of an object over a period of time. Acceleration describes.

In this chapter you will:  Use Newton’s laws to solve problems.  Determine the magnitude and direction of the net force that causes a change in an object’s.

Mechanics Newton‘s Laws. Inertia Inertia Inertia is the property of any mass to resist a change in motion (velocity or direction). Inertia is the property.

KEY WORDS: Velocity Acceleration Deceleration Speed ASSESSMENT: P2 REVISION – CHAPTER 1 – Motion Distance-time Graphs The gradient of the line on a distance-time.

LESSON 18 Weight & Mass Recall that according to Newton’s Second Law of Motion, the acceleration of an object is proportional to its mass and the force.

Newton’s Second Law of Motion

P2 REVISION – MOTION Describe what is happening in the graph between points: A-B: B-C: C-D: D-E: Using the formula speed = distance time work out the.

Recall Newton's First Law

Physics Section 4.3 Apply Newton’s 2nd and 3rd Law of Motion

Acceleration Use distance time graphs to describe the motion of an object.

Newton’s Second Law Recall Newton’s Second Law

Notes 2.2: Newton’s 2nd Law of Motion

FORCE AND MOTION.

6.2 Newton's Second Law pp

Objective SWBAT describe Newton’s second law of motion and use it to explain the movement of objects.

Newton’s Second Law “ Forces do not cause motion. Forces cause accelerations”

Free Fall and Newton’s Second Law

Chapter Six: Laws of Motion

Newton’s First and Second Law

Chapter Six: Laws of Motion

Newton’s 2nd Law of Motion

Newton’s 1st Law: More Practice

Newton’s Second Law If all forces are in balance, object is at equilibrium and does accelerate Newton’s second law applies when forces are unbalanced;

Chapter Six: Laws of Motion

Free Fall October 21, 2015.

Physics 5: Forces Section 3: Elasticity 18 Elastic deformation

Presentation transcript:

Force

Objective Use the equation: net force = mass x acceleration

Stowmarket Physics Types of force Gravitational force between two objects with mass Magnetic force between two magnetic objects Electrical force between charged objects

Stowmarket Physics Force, mass and acceleration F = ma applet Newton established that: acceleration produced by a force depends on the mass of the object Also that if an object has no resultant force on it, it will not accelerate eg a car travelling at a constant velocity (balanced force) has no resultant force, and therefore no acceleration

Stowmarket Physics Force, mass and acceleration A resultant force always causes acceleration Zero resultant force implies constant velocity (which may be zero)

Stowmarket Physics Force, mass and acceleration Newton established that: acceleration is proportional to force acceleration is inversely proportional to mass, if the force is constant Newton’s Second Law: “The acceleration produced by a force when it acts on a body is proportional to the force and takes place in the direction of the force”

Stowmarket Physics Force, mass and acceleration F = ma where F = force in Newtons (N) m = mass in kilograms (kg) a = acceleration (ms -2 )

Objective F = ma practical

Stowmarket Physics F = ma Practical accelerating washers washers trolley mask size 1 cm light gates (resourcefulphysics.org)

Stowmarket Physics F = ma Practical Plot a graph of acceleration (y – axis) against force (x- axis). Use the graph to answer the following questions: 1From Newton’s 2nd Law you would expect the graph of acceleration against force to be a straight line which passes through the origin. 2Explain why you would expect this to be the case. 3Explain what the gradient of the graph represents. 4Calculate the gradient of the graph and explain whether it agrees with your answer to question (3).

Stowmarket Physics F = ma Practical 5Your results may show some scatter. Explain why this might be and the causes of any inaccuracy. 6Does the experimental result support Newton’s Second Law of Motion?

Objective Define the Newton

Stowmarket Physics Define the Newton One Newton is the force that will give a mass of one kilogram an acceleration of one metre per second squared 1 N = 1 kg x 1 ms -2

Objective Explain why F = ma cannot be used for a particle travelling at very high speeds

Stowmarket Physics Explain why F = ma cannot be used for a particle travelling at very high speeds According to Einstein’s Theory of Special Relativity, at speeds approaching the speed of light, the mass of a body increases This means that at very high speeds, Newton’s 2 nd Law is invalid This is unlikely to affect the majority of calculations!

Stowmarket Physics Example A car of mass 500kg is travelling at 20 ms -1. The driver sees a red traffic light ahead, and slows to a halt in 10 s. What force must the brakes provide to do this? a = v – u / t = 0 ms -1 – 20 ms -1 / 10 s = 2 ms -2 F = ma = 500 kg x 2 ms -2 = 1000 N

Questions Physics 1 Page 29 SAQ’s 1 - 4