Warm-Up October 26, 2015 “Super Sliders” and other similar products claim to allow you to “effortlessly slide heavy furniture.” How do they work?

Slides:

Advertisements

Similar presentations

Unbalanced Forces.

Advertisements

Examples and Hints for Chapter 5

 Friction opposes motion  Friction is dependent on the texture of the surfaces  Friction is dependent on normal force motionfriction.

Forces and the Laws of MotionSection 4 Click below to watch the Visual Concept. Visual Concept Everyday Forces.

Friction Friction is a force that opposes the motion, or tendency of motion, of an object. Friction is caused by the electromagntic interactions of particles.

The first exam will be held on Tuesday, September 23, in room 109 Heldenfels from 7 to 9:30 p.m. Section 807 and half of section 808 (students with last.

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.

Aim: How can we calculate static and kinetic friction? A 3.5 kilogram box is being pulled to the right with a force of 15 newtons. The box is moving at.

PHY131H1S - Class 11 Today: Friction, Drag Rolling without slipping Examples of Newton’s Second Law Microscopic bumps and holes crash into each other,

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.

Friction is a force that opposes the motion between two surfaces that are in contact  is a force that opposes the motion between two surfaces that are.

Friction There are many forms of friction. This lesson introduces the force laws for static friction, kinetic friction, and rolling friction. Students.

Friction. Newton’s Second Law W = mg W = mg Gives us F = ma Gives us F = ma.

Warm Up The coefficient of static friction between a duck and some grass is 0.2. The weight of the duck is 30 N. 1) What is the maximum force of static.

There are two types of friction. Both always oppose motion. When you pushed your book across the desk, it experienced a type of friction that acts on moving.

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

Friction 5.2 Static and Kinetic Friction

Week.  Student will:  Incorporate Force of Friction into calculation  Static Friction  Kinetic Friction.

A Force Caused by Gravity.  If we apply Newton’s 2 nd Law to objects accelerating due to gravity F G = mg  F G – force of gravity, commonly called.

Exploring Frictional Forces Friction Friction and Newton’s Laws Static and Kinetic Friction Coefficient of Friction Practice.

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

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

Friction Ffriction = μFNormal.

Forces Use the force Luke!. Forces Difference between mass and weight: Weight is the force you put on the Earth: In the English system we use lbs. In.

Friction. Newton’s Second Law W = mg W = mg Gives us F = ma Gives us F = ma.

Friction. Consider An Object Coming to Rest Aristotle’s idea: Rest is the “natural state” of terrestrial objects Newton’s view: A moving object comes.

The tendency of objects to resist change in their state of motion is called inertia  Inertia is measured quantitatively by the object's mass.  Objects.

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

Unit Two: Dynamics Part 3: Friction.

Friction A force that opposes motion. Causes Of Friction Matter is not as smooth on its surface as it appears to be; tiny irregularities get “stuck”

4.3 Solving Friction Problems

 Friction is a resistive force caused by two surfaces sliding across each other.  Always acts opposite the direction of motion.

Unit Two: Dynamics Part 3: Friction. Friction – Quick Review A contact force Electromagnetic Force (between surface atoms of objects touching) Always.

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.

Warm-Up October 26, 2015 “Super Sliders” and other similar products claim to allow you to “effortlessly slide heavy furniture.” How do they work?

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.

9/30 Friction  Text: Chapter 4 section 9  HW 9/30 “Skier” due Thursday 10/3  Suggested Problems: Ch 4: 56, 58, 60, 74, 75, 76, 79, 102  Talk about.

A 4.25 kg block of wood has a kinetic coefficient of friction of and a static of between it and the level floor. 0. Calculate the kinetic friction.

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.

Friction the force exerted by a surface that opposes the motion of an object moving (or trying to move) across it.

An 7.3-kg object rests on the floor of an elevator which is accelerating downward at a rate of 1.0 m/s 2. What is the magnitude of the force the object.

Friction Dynamics Physics. #1) Friction of a car A car has a mass of 1700 kg and is located on a level road. Some friction exists in the wheel bearings.

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 4 Everyday Forces Chapter 4 Objectives Describe air resistance.

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.

Warm-Up: December 11, 2015  A 1.75 kg rock is thrown north at a speed of 3.00 m/s. A ball of clay is thrown south at a speed of 2.00 m/s. The rock gets.

Welcome to Keyboarding JEOPARDY KEYBOARDING Final Jeopardy Question Newton’s Laws Vertical forces 100 Forces General friction

Week.  Student will:  Incorporate Force of Friction into calculation  Static Friction  Kinetic Friction Cornell Notes Needed – Section 5.2.

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

CP Physic Chapter 5 Review 1. The coefficient of kinetic friction is ______ the coefficient of static friction? ans: less than 2. Which of the following.

Warm Up A 15 kg block sits on a frictionless slide which has an angle of incline of 30 degrees. A) Draw a Free Body Diagram of the situation B) What is.

Frictional Force A force that opposes motion Acts parallel to the

Physics 1 – Nov 1, 2016 P3 Challenge –

Physics 111: Mechanics Lecture 5

Static and Kinetic Frictional Forces Read 5.1 OpenStax

Free Body diagrams and problem solving

Newton’s Laws Acceleration

Normal Force and Friction Force

Free Body diagrams and problem solving

Free Body diagrams and problem solving

Friction is one of the most important opposing forces.

Objectives Chapter 4 Section 4 Everyday Forces

A fridge resting on a cement garage floor has a static coefficient of friction of 0.52 and a kinetic coefficient of friction of The fridge has a.

Textbook: 5.5 Homework: WS - Friction

A general method for solving problems involving forces

Physics 1 – Nov 2, 2017 P3 Challenge –

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

Presentation transcript:

Warm-Up October 26, 2015 “Super Sliders” and other similar products claim to allow you to “effortlessly slide heavy furniture.” How do they work?

Free Body Diagram Answers

Force Situations Worksheet

Friction Section 5.2

Two Types of Friction Kinetic Friction: When an object is moving Static Friction: When an object is not moving (stationary) (There are other types of friction that we will not discuss in this course.)

Kinetic Friction

Kinetic Friction Force

Example 1

You-Try #1 You are pushing a 25.0 kg box horizontally with a force of 125 N. The coefficient of kinetic friction is a) What is the force of friction? b) What is the resulting acceleration?

Warm-Up: October 27, 2015

Static Friction

Static Friction Force

Example 2 A 30.0 kg box is at rest on the floor. If the coefficient of static friction is 0.55, what is the maximum push force you could apply to the box before it starts moving?

You-Try #2 A 15.0 kg box is at rest on the floor. If you have to push with a force of 95 N before the box starts to move, what is the coefficient of static friction?

Warm-Up: A 70.0 kg couch is at rest on the floor. If the coefficient of static friction is 0.65, what is the maximum push force you could apply to the couch before it starts moving? (Look at example 2 if you don’t remember how to solve this)

Friction Coefficients For a given surface combination, the coefficient of static friction will always be larger than the coefficient of kinetic friction. It’s harder to get something to start moving than to keep it moving.

Assignments: Read Section 5.2 of your textbook (pages ) Page 128 #17-20 Page 130 #27, 28, 30 Braddock House Clean-Up Worksheet ◦ On website

Worksheet “Braddock House Clean-Up”