In this post, we will see how the coefficient of static friction (μs) = tan θ, where θ is the angle of inclination where static friction becomes the highest. In other words, θ is the angle of inclination when friction equals the value of limiting friction. (The maximum possible frictional force before the object starts […]
Frictional force
Three things are worth noting about frictional forces
Three things are worth noting about frictional forces: these fundamental points will help you to understand friction as a force, answer questions from the friction chapter and solve numerical problems based on friction. Here are the points: The smaller µ is, the more slippery the surface. For instance, ice will have much lower coefficients of […]
Ways to Reduce Friction & Ways to Increase Friction
We need to reduce or increase friction in different situations, depending on our requirements and benefits. Here, in this post, we will list down some efficient ways to reduce friction. Not only that, but we will also come up with some intelligent ways to increase friction as well to make our life better. Ways to […]
Measurement of coefficients of friction
This post discusses a typical experimental setup for the Measurement of coefficients of friction. As you well know, it’s easier to push an object from one point to another than to carry it from one point to another. We usually just accept this observation as obvious. But why is this so? The observation leads to […]
Racecar tires versus passenger car Tires – The Physics of Car Tires (based on Friction) | Slick Tyre vs. Road Tyre – based on frictional force
You must have noticed that the racing car tires are made of rubbers, but without any treads. But why is it so? To answer this we have to compare Racecar tires and passenger car tires with the help of the Physics of Car Tires (based on Friction).In other words, we will discuss the topic: Road […]
Bearings to reduce friction and increase the efficiency of devices
There are different ways to reduce friction. One way to reduce friction and increase the efficiency of devices such as generators, motors, and fans is to use bearings. Bearings are devices that allow surfaces to slide or roll across each other while reducing the force of friction. Many different types of bearings can be used […]
How do Running shoes increase the force of static friction exerted by the ground on the athlete?
This post gives a preliminary idea of how physics fundamentals like friction and Newton’s laws of motion are involved in the design aspects of running shoes. Nowadays when sports have become so competitive, a pair of running shoes efficiently designed can bring a huge improvement in the performance of a runner. Here we will see […]
The Friction Coefficient | Coefficient of Friction – questions, answers for class 11
This post is entirely focused on the Friction coefficient (also known as the coefficient of friction). We will define it and find out its types. Also, we will derive equations and get a list of values. Please note the symbol μ(mu) which denotes this coefficient. What is the friction coefficient? The Friction coefficient is a […]
Friction definition | contact force as the cause of friction
Friction / Friction definition: If we either slide or attempt to slide a body over a surface, the motion is resisted by a bonding (cold-weld) between the body and the surface. The resistance is considered to be a force called either the frictional force or simply friction. This force is directed along the surface, opposite […]
Contact Forces between blocks – Application of Newton’s laws
Application of newton’s laws: Newton’s laws of motion give us concepts of force (first law), measurement of force with its equation (second law), and the reaction of force (3rd law). Today we will discuss an interesting topic of mechanics – the application of Newton’s laws. It will cover a few interesting applications of Newton’s Laws […]
How Friction helps in walking?-explanation with a free body diagram
“If Friction is a force that opposes motion then how friction helps in walking?” As we walk we apply a contact force on the surface below and that surface also exerts an equal and opposite contact force on our foot or shoes. Depending on the position and angle of our foot, this reaction contact force applied […]
Pushing a car, Newton’s 3rd Law and Friction
Hope you have seen people pushing their car when it’s not starting due to some issue. When someone is pushing a car or something like that, he first pushes the ground or floor obliquely backwards with his feet. Following the ‘3rd law of Newton‘ the ground also exerts an equal and opposite force obliquely on […]
