Sophia Learning
Sophia: Practicing W/ Friction: Lesson 2
This lesson provides the learner with example problems on static and sliding friction. It is 2 of 2 in the series titled "Practicing w/ Friction."
Sophia Learning
Sophia: Practicing W/ Friction: Lesson 1
This lesson provides the learner with example problems on static and sliding friction. It is 1 of 2 in the series titled "Practicing w/ Friction."
Sophia Learning
Sophia: Sliding Friction: Lesson 1
This lesson introduces the concept of sliding friction and explains how it is experienced. It is 1 of 2 in the series titled "Sliding Friction."
Sophia Learning
Sophia: Static Friction & Normal Forces: Lesson 1
This lesson explains why static friction depends on normal forces. It is 1 of 2 in the series titled "Static Friction & Normal Forces."
Sophia Learning
Sophia: Static Friction & Surface Area: Lesson 1
This lesson explains why static friction does not depend on the contact surface area between an object and the surface that object is resting on. It is 1 of 2 in the series titled "Static Friction & Surface Area."
Sophia Learning
Sophia: Tension Forces & Friction: Lesson 1
This lesson demonstrates how tension forces can be used to determine the friction force acting on an object. It is 1 of 2 in the series titled "Tension Forces & Friction."
Sophia Learning
Sophia: Calculating Kinetic Friction: Lesson 1
This lesson demonstrates how to make calculations using kinetic friction. It is 1 of 2 in the series titled "Calculating Kinetic Friction."
Sophia Learning
Sophia: Common Coefficients of Kinetic Friction: Lesson 1
This lesson provides the learner with the coefficients of kinetic friction for some common surfaces. It is 1 of 2 in the series titled "Common Coefficients of Kinetic Friction."
Sophia Learning
Sophia: Common Coefficients of Static Friction: Lesson 1
This lesson provides the learner with the coefficients of static friction for some common surfaces. It is 1 of 2 in the series titled "Common Coefficients of Static Friction."
Sophia Learning
Sophia: Friction & Net Force: Lesson 1
This lesson explains how friction is part of the net force acting on an object. It is 1 of 2 in the series titled "Friction & Net Force."
Science Friday Initiative
Science Friday: Ice Science a Slippery Quandary for Physicists
Robert Carpick, a curler and a friction scientist, explains what scientists now think causes ice to be slippery. It is believed that there is a nano-thin layer of water on top of the ice that allows skates to slide along ice. Aired Feb....
Mocomi & Anibrain Digital Technologies
Mocomi: What Is Friction?
A video illustrates what friction is. Investigate whether friction can occur in different states of matter. [2:22]
Khan Academy
Khan Academy: Force of Friction Keeping the Block Stationary (Correction)
Corrects an numerical error in a previous video on how a block of wood is kept stationary by the force of friction.
Mocomi & Anibrain Digital Technologies
Mocomi: Wheel and Axle
Learn about this simple machine, and see how it reduces the effort required to move certain objects through this fun and animated learning module.
PBS
Pbs Learning Media: Crash Course Physics: Friction
Why is it hard to move a heavy bookcase across a carpeted floor? And why is it easier to keep it moving than it was to get it started moving? You might think it's all about weight, but actually it's about friction. Two kinds of friction!...