 Spend 15-20 minutes completing the activity regarding friction.

Slides:

Advertisements

Similar presentations

No Strings Attached: Normal Forces, Force Vectors, Strings, Springs and Pulleys Chapter Important Vocabulary: Normal Force Contact Force Tension.

Advertisements

Friction. Holding in Place  Objects on an incline will often stay put.  There must be a force that holds the object in place.  Static friction is from.

Static Friction. Holding in Place  Objects on an incline will often stay put.  There must be a force that holds the object in place.  Static friction.

Friction Friction is a force that opposes the motion, or tendency of motion, of an object. Friction is primarily caused by the chemical bonding of molecules.

Friction. Static Friction f s - The force on an object that keeps it from slipping f s - The force on an object that keeps it from slipping f s = F push.

Do Now: A 40 N chair is pushed across a room with an acceleration of 2 m/s 2. Steven pushes with a force of 15N. What is the force of friction acting on.

Force Problems involving Friction. What is Friction?  It is a force that opposes motion.  Friction is caused by the contact (rubbing) of 2 surfaces.

Applications involving Friction. What is Friction?  Friction is a FORCE that opposes or impedes the motion of an object.  Friction is caused by microscopic.

Drive train Make your robot move!.

Types of Forces Gravity and Friction. Forces!!!!! PUSH Or A Pull.

Force : Push or pull Newton: unit to measure force Net force: combination of force Unbalance force: object start moving Balance force: object doesn`t move.

Newton’s 2 nd Law. Enduring Understanding: Studying dynamics (causes of motion) has had a profound effect on the way humans view their world. Essential.

Forces & Motion The Force of Friction. Frictional Forces Frictional forces arise from complex interactions between the surfaces of objects. Even very.

Find 17 creatures in this paragraph

– coefficient of kinetic friction

4-4: Everyday Forces Objectives: Explain the difference between mass and weight Find the direction and magnitude of the normal force Describe air resistance.

Science Investigations.  A push or pull on an object  Units: Newton (N) = 1 kg x m/s 2  Net Force (Fnet) : sum of all of the forces that are acting.

Bellwork Pick up a free-body diagram sheet and begin working on it.

Chapter 5:Using Newton’s Laws: Friction, Circular Motion, Drag Forces.

Everyday Forces Chapter 4 – Section 4 St. Augustine Preparatory School October 13, 2016.

4.3 Solving Friction Problems

Chapter 5 Outline Applying Newton’s Laws Statics Dynamics Friction Static friction Kinetic friction Fluid resistance Circular Motion Fundamental forces.

 Friction – force that opposes motion  Caused by microscopic irregularities of a surface  The friction force is the force exerted by a surface as an.

When a net external force acts on an object of mass m, the acceleration that results is directly proportional to the net force and has a magnitude that.

Forces on an incline. The Gravitational force FgFg FgFg FgFg FgFg FgFg FgFg The gravitational force on an object always points straight down and maintains.

4.8 Friction and inclines.

March 24, 2014 Homework: Complete Calculating Net Force sheet and Section Assessment Question 1C on pg. 50 in textbook.- Complete question on the back.

Lesson 4.4 Everyday Forces Essential Question: What are some of the everyday forces?

Newton’s 2 nd Law Example with Angles! Consider a box of mass m being pulled across a rough horizontal floor with an applied force F A at 35 °. The coefficient.

Physics Section 4.4 Describe various types of forces Weight is a measure of the gravitational force exerted on an object. It depends upon the objects.

Friction Honors Physics. What we know.. 1.It’s a force! 2.It opposes motion 3.It requires contact 4.It is somehow related to the normal force..

Force: push or pull  all forces have size and direction  measured in Newtons (N) An object will speed up, slow down, or turn Only if something is pushing.

Friction and Forces on Inclined Planes. The Normal Force The normal force is the supporting force that acts on the object perpendicular to the surface.

Notes: Friction Static friction (F s ) is the force that opposes initial motion between two contacting surfaces. (standing friction) When a force is applied.

Velocity = 2 mi/hr What is the Net Force? 50 lbs ZERO! THERE IS NO ACCELERATION FfFf.

Physics Section 4.4 Describe various types of forces Weight is a measure of the gravitational force exerted on an object. It depends upon the objects.

Coefficients of Friction Static vs. Kinetic. Static Friction The force that opposes the start of motion between two objects in contact with one another.

6 Applications of Newton’s Laws 6-1 Frictional Forces What is friction? To slide one such surface across another requires a force large enough to overcome.

The “Spring Force” If an object is attached to a spring and then pulled or pushed, the spring will exert a force that is proportional to the displacement.

F f = . F norm Friction “  ” is the coefficient of friction…it represents the types of surfaces that are in contact with each other.

Friction. I. Friction A. Background 1. A force that acts opposite the direction of movement 2. Friction slows you down and causes heat.

Dynamics: Newton’s Laws of Motion

ES2501: Statics/Unit 24-1: Friction Related Problems

SPH3U – Unit 2 Friction.

Forces in Nature.

Coefficients of Friction

Miscellaneous Forces.

Chapter III Dynamics The Net Force on a Body and Newton’s First Law

Do Now: A 40 N chair is pushed across a room with an acceleration of 2 m/s2. Steven pushes with a force of 15N. What is the force of friction acting.

Aim: How do we explain the force of friction?

4-6 Weight – the Force of Gravity; and the Normal Force

Types of Forces Chapter 9.1.

Dynamics: Newton’s Laws of Motion (Ch. 12)

Forces May they be with you .

Friction and Normal Force

5. Types of forces Remember the 4 basic interactions: Common forces:

Normal and Frictional Forces

Textbook: 5.5 Homework: WS - Friction

Bell Work: Friction Details

Types of force.

Su-Jin Kim Gyeongsang National University Fall 2017

Static and Kinetic Friction

Chapter 2 Forces.

Presentation transcript:

 Spend minutes completing the activity regarding friction.

 Support force against weight of an object  If more force is applied in the same direction as gravity (and the surface doesn’t break), the surface will provide more normal force to balance the net force.

 What is the normal force? ◦ Angle = 30° ◦ W = 100 ◦ F = 10

 Static Friction ◦ Friction between the surface and an object at rest  Kinetic Friction ◦ Friction between the surface and a moving object

 Strength of the maximum friction depends on… ◦ The “roughness” of the two materials (  ) ◦ Normal force supporting the object (How closely pressed the two objects are) (F N )  f k = kinetic friction force,  = coefficient of friction, F N = Normal Force

 The maximum static friction is the maximum limit of friction force the two objects can have before moving.