In this video Paul Andersen explains how contact forces result from interatomic forces. The following forces are explained at the interatomic level: normal force, applied force, friction force, tension force, spring force, and buoyant...

This content presents a solved physics problem that calculates the frictional force and acceleration of a 3.5 kg block pushed along a horizontal floor by a 15 N force at a 40° angle to the horizontal. It demonstrates the application of...

Newton's first law tells us that an object in motion will remain in motion, but we don't really see that on earth, do we? If you throw a ball, or push a hockey puck, these things do eventually stop. Why? To answer this we must learn...

A birthday party isn’t complete without cake, music and drama! This lesson will introduce the most common types of contact forces encountered in Physics.

Definitions included: contact force, normal force, friction force, static...

Lesson 6 (Friction) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem1:...

The maximum friction force when stationary is equal to UsN. The friction force when moving is UkN. This is always constant. In almost all cases, Us is greater than Uk (as expected). Wheels undergoing pure roll always experience static...

This problem is from the Meriam and Kraige Statics textbook. I do not own this problem and I am not using it for commercial purposes.



In this problem you need to always start with a free body diagram. Notice that in order to...

The maximum friction force that can be a applied on a stationary object is F_max = u_s N

Learn how to solve classic ladder problems using static equilibrium principles. This lesson covers torque, free body diagrams, normal and frictional forces, and strategic pivot selection

In this video, the sport of Hammer throw is explained and how physics plays a crucial role in achieving a long-distance throw. The concept of centripetal force and how it affects circular motion is discussed with the help of an...

In this video Paul Andersen explains how the vector sum of forces can be used to identify the net force on an object. The net force can be used to determine the overall acceleration of the object using Newton's Second Law.

In this video Paul Andersen describes the relationship between energy and forces. When objects are directly touching electromagnetic forces can result in forces and energy exchange. When objects are not directly touching fields;...

Friction is the resistance that one object or surface experiences when moving over another object or surface. The two types of friction that come into play when moving two objects against one another are static and kinetic. Static...

Friction is the resistance that one object or surface experiences when moving over another object or surface. The two types of friction that come into play when moving two objects against one another are static and kinetic. Static...

In this physics lesson, we break down how the force of friction always opposes sliding motion, whether it’s static or kinetic friction. Through clear demonstrations, motion tracking, and connections to Newton’s Laws of Motion, you’ll see...

In this video we will look at how to calculate momentum, use the idea of momentum to describe the movement of objects and use the law of the conservation of momentum to describe momentum in elastic collisions. First, try this question: A...

What is friction? What are the two types of frictional forces?<br/>
Newton's Laws Of Motion With Friction, Part 1

Lotus isn’t the only one who has noticed that Ian is up to something… This lesson will explain how dynamic friction is dependent on the normal force and roughness of a surface, but independent of speed and apparent contact...

In this video, we tackle three multiple-choice questions related to friction. We start with a problem involving a block and a cube, discussing the forces at play and determining the force preventing acceleration. Next, we analyze a book...

Hey guys, this video covers the intuition behind friction. Friction always acts in the direction opposite to the applied force. Using this and the fact that the static coefficient of friction is different to the kinetic coefficient of...

This video introduces the concept of non-conservative forces, focusing on kinetic friction and air resistance as examples. It explains how these forces cause mechanical energy to change or dissipate within a system, converting kinetic...

New ReviewFriction always acts to oppose sliding motion, even when it makes an object speed up. Learn how this works with a clear and simple example using a sliding disk and a moving block.

This content explores the kinetic energy of a rolling object, comprising both rotational kinetic energy (1/2 I omega^2) and translational kinetic energy (1/2 M v_com^2). It emphasizes energy conservation in rolling, the crucial role of...

Just an intro into friction.