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The Force of Friction
Read the Fine Print
Educational Use
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In the first of two lessons of this curricular unit, students are introduced to the concept of friction as a force that impedes motion when two surfaces are in contact. Student teams use spring scales to drag objects, such as a ceramic coffee cup, along a table top or the floor, measuring the frictional force that exists between the moving object and the surface it slides on. By modifying the bottom surface of the object, students find out what kinds of surfaces generate more or less friction. They also discover that both static and kinetic friction are involved when an object initially at rest is caused to slide across a surface. In the second lesson of the unit, students design and conduct experiments to determine the effects of weight and surface area on friction. They discover that weight affects normal friction (the friction that results from surface roughness), but for very smooth surfaces, the friction due to molecular attraction is affected by contact area.

Subject:
Applied Science
Engineering
Physical Science
Physics
Material Type:
Full Course
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Mary R. Hebrank
Date Added:
10/14/2015
Forces and Motion
Unrestricted Use
CC BY
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Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Subject:
Physical Science
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Kathy Perkins
Noah Podelefsky
Sam Reid
Trish Loeblein
Date Added:
09/27/2011
Forces and Motion (AR)
Unrestricted Use
CC BY
Rating
0.0 stars

Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Subject:
Physical Science
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Kathy Perkins
Noah Podolefsky
Patricia Loblein
Sam Reid
Date Added:
10/01/2010
Forces and Motion: Basics
Unrestricted Use
CC BY
Rating
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Explore the forces at work in a tug of war or pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects the motion of objects.

Subject:
Physical Science
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Ariel Paul
Kathy Perkins
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
10/24/2012
Forces in 1 Dimension
Unrestricted Use
CC BY
Rating
0.0 stars

Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Subject:
Physical Science
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Danielle Harlow
Kathy Perkins
Sam Reid
Trish Loeblein
Date Added:
10/03/2006
Form vs. Function
Read the Fine Print
Educational Use
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Students take a closer look at cars and learn about some characteristics that affect their energy efficiency, including rolling resistance and the aerodynamics of shape and size. They come to see how vehicles are one example of a product in which engineers are making changes and improvements to gain greater efficiency and thus require less energy to operate.

Subject:
Applied Science
Engineering
Material Type:
Lesson Plan
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Eszter Horanyi
Janet Yowell
Date Added:
10/14/2015
Friction
Unrestricted Use
CC BY
Rating
0.0 stars

Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away.

Subject:
Physical Science
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
Michael Dubson
Mindy Gratny
Wendy Adams
Date Added:
06/01/2004
Friction (AR)
Unrestricted Use
CC BY
Rating
0.0 stars

Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away. Arabic Language.

Subject:
Physical Science
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
Michael Dubson
Mindy Gratny
Wendy Adams
Date Added:
06/02/2008
Friction Force
Read the Fine Print
Educational Use
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Students use LEGO® MINDSTORMS® robotics to help conceptualize and understand the force of friction. Specifically, they observe how different surfaces in contact result in different frictional forces. A LEGO robot is constructed to pull a two-wheeled trailer made of LEGO parts. The robot is programmed to pull the trailer 10 feet and trial runs are conducted on smooth and textured surfaces. The speed and motor power of the robot is kept constant in all trials so students observe the effect of friction between various combinations of surfaces and trailer wheels. To apply what they learn, students act as engineers and create the most effective car by designing the most optimal tires for given surface conditions.

Subject:
Applied Science
Engineering
Physical Science
Physics
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Akim Faisal
Date Added:
09/18/2014
Friction Lab-What a Drag!
Unrestricted Use
CC BY
Rating
0.0 stars

Using different material surfaces, students can measure the amount of friction force (Newtons) that is required to drag a mass weight or wooden block across each type of surface material. Students will collect and graph data, identifying independent and dependent variables, and complete a scaffolded conclusion.

Subject:
Physics
Material Type:
Activity/Lab
Author:
Kara Adkins
Date Added:
03/09/2024
Friction's Impact on Motion
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating
0.0 stars

This lesson looks at the impact friction has on motion by running toy cars on different surfaces. Students will measure the distance the toy car travels down a ramp and see how adding sandpaper as a source of friction impacts distance.

Subject:
Physical Science
Material Type:
Activity/Lab
Date Added:
12/05/2018
Hovercraft Racers!
Read the Fine Print
Educational Use
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Students gain first-hand experience on how friction affects motion. They build a hovercraft using air from a balloon to levitate a craft made from a compact disc (CD), learning that a bed of air under an object significantly reduces the friction as it slides over a surface.

Subject:
Applied Science
Engineering
Physical Science
Physics
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Ben Heavner
Denise Carlson
Malinda Schaefer Zarske
Date Added:
10/14/2015
How to Pull Something Heavy
Read the Fine Print
Educational Use
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0.0 stars

Students measure and analyze forces that act on vehicles pulling heavy objects while moving at a constant speed on a frictional surface. They study how the cars interact with their environments through forces, and discover which parameters in the design of the cars and environments could be altered to improve vehicles' pulling power. This LEGO® MINDSTORMS® based activity is geared towards, but not limited to, physics students.

Subject:
Applied Science
Education
Engineering
Mathematics
Physical Science
Physics
Technology
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Irina Igel
Date Added:
09/18/2014
Imagine Life without Friction
Read the Fine Print
Educational Use
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Students are introduced to the concept of inertia and its application to a world without the force of friction acting on moving objects. When an object is in motion, friction tends to be the force that acts on this object to slow it down and eventually come to a stop. By severely limiting friction through the use of the hover pucks, students learn that the energy of one moving puck is transferred directly to another puck at rest when they collide. Students learn the concept of the conservation of energy via a "collision," and will realize that with friction, energy is converted primarily to heat to slow and stop an object in motion. In the associated activity, "The Puck Stops Here," students will investigate the frictional force of an object when different materials are placed between the object and the ground. This understanding will be used to design a new hockey puck for the National Hockey League.

Subject:
Applied Science
Engineering
Physical Science
Physics
Material Type:
Activity/Lab
Lesson Plan
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Anne Vanderschueren
Greg Larkin
Date Added:
09/18/2014
Introduction to Mechanics
Unrestricted Use
CC BY
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This course will survey physics concepts and their respective applications; it is intended as a basic introduction to the current physical understanding of our universe. In this course, the student will study physics from the ground up, learning the basic principles of physical law, their application to the behavior of objects, and the use of the scientific method in driving advances in this knowledge. This course focuses on Newtonian mechanics--how objects move and interact--rather than Electromagnetism or Quantum Mechanics. While mathematics is the language of physics, the student need only be familiar with high school-level algebra, geometry, and trigonometry; the small amount of additional math needed will be developed during the course. (Physics 101; See also: Biology 109, Chemistry 001, Mechanical Engineering 005)

Subject:
Mathematics
Physical Science
Physics
Trigonometry
Material Type:
Full Course
Provider:
The Saylor Foundation
Date Added:
11/16/2011
Investigating Forces: Pop Bottle Rockets
Conditional Remix & Share Permitted
CC BY-NC-SA
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This activity is a field investigation where students will gather data on speed, acceleration, gravity, friction, and forces. They will design and conduct an investigation.

Subject:
Physical Science
Physics
Material Type:
Activity/Lab
Provider:
Science Education Resource Center (SERC) at Carleton College
Provider Set:
Pedagogy in Action
Author:
Jennifer Carlson
Date Added:
08/10/2012
Investigating Friction:  Investigate How the Force of Friction Opposes Motion
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating
0.0 stars

This activity needs large linoleum, carpet and tar or asphalt space to race student constructed balloon powered cars. Students will learn that speed, velocity, and changes in velocity are the result of the action of forces on objects

Subject:
Physical Science
Physics
Material Type:
Activity/Lab
Provider:
Science Education Resource Center (SERC) at Carleton College
Provider Set:
Pedagogy in Action
Author:
Faye Sandy
Date Added:
08/10/2012