Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Types of Friction Problems

Types of Friction Problems

Friction is an essential concept in physics, engineering, and everyday life. It is the force that opposes the relative motion or tendency of such motion between two surfaces in contact. One of the most common types of friction encountered in various applications is dry friction. Dry friction problems can be broadly categorized into three types, each with unique characteristics and challenges.
The first type of dry friction problem involves situations where there is no apparent impending motion.

Characteristics of Dry Friction

Characteristics of Dry Friction

Dry friction occurs when two solid surfaces slide against each other without any lubrication or fluid present. It causes resistance when pushing objects along a surface, like a gardener pushing a wheelbarrow. The force applied to move the cart causes dry friction between the wheel and the ground.
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...

Friction: Problem Solving

Friction: Problem Solving

Friction is an essential force that influences the motion of objects in daily life. Depending on the situation, it can be either beneficial or problematic. Consider a bus with a mass of three megagrams and its center of mass at a specific point, moving along a banked road at a constant speed. The coefficient of static friction between the tires and the road is 0.5. Find the maximum angle of the banked road at which the bus would not slip or tip.
Initially, a visual representation of the...

Static and Kinetic Frictional Force

Static and Kinetic Frictional Force

One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...

Kinetic Friction

Kinetic Friction

Consider a truck trying to pull a stationary car. As the truck exerts a force on the car, static friction is created at the point of contact between the two surfaces. This frictional force resists the car's movement and keeps it at rest. However, when the applied force by the truck surpasses the limiting static frictional force, an interesting phenomenon occurs. The frictional force at the interface reduces to a lower value, known as the kinetic frictional force. At this point, the car begins...

Frictional Forces on Flat Belts

Frictional Forces on Flat Belts

Flat belts are commonly used in various industrial applications for transmitting power from one pulley to another. When a flat belt is wrapped around a set of pulleys, it experiences different tensions at the driving pulley ends due to the friction between the belt and pulley surface. When the pulley moves in a counterclockwise direction, the tension T2 on the opposite side of the pulley where the belt is moving away from is higher than the tension T1 on the side where the belt is moving...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Laser treatment of hypertrophic scars: the operative and peri-operative practices of burns clinicians.

Lasers in medical science·2026

Same author

Exploring Technological Solutions for Interoperability Between Patient Electronic Medical Records and Clinical Registries: Scoping Review.

Journal of medical Internet research·2026

Same author

Hypothermia risk factors in patients with burns during emergency presentations: protocol for a retrospective cohort study.

BMJ open·2026

Same author

Study of topical anaesthetic for paediatric laser procedures (STAPLE): a protocol for a feasibility and pilot randomised controlled trial.

BMJ open·2026

Same author

How deep does it really burn? Social and emotional implications of paediatric burn injuries and care on Aboriginal and Torres Strait Islander families.

Burns : journal of the International Society for Burn Injuries·2026

Same author

Heads Up: A Retrospective Review of Paediatric Trauma Secondary to Electric Scooters at a Tertiary Paediatric Trauma Centre in Queensland.

ANZ journal of surgery·2025

Search research articles

Related Experiment Video

Updated: Jul 4, 2026

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

Published on: February 5, 2020

Paediatric treadmill friction injuries.

Luke Jeremijenko¹, Jonathan Mott, Belinda Wallis

¹Stuart Pegg Paediatric Burns Unit, Royal Children's Hospital, Brisbane, Australia. lukejenko@hotmail.com

Journal of Paediatrics and Child Health

|June 19, 2008

Summary

This summary is machine-generated.

Paediatric treadmill friction injuries are severe and rising. This study highlights the urgent need for mandatory safety standards to prevent these common childhood injuries.

More Related Videos

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Published on: July 17, 2020

Maintenance of a Lateral Fluid Percussion Injury Device

Maintenance of a Lateral Fluid Percussion Injury Device

Published on: April 21, 2023

Related Experiment Videos

Last Updated: Jul 4, 2026

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

Published on: February 5, 2020

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Published on: July 17, 2020

Maintenance of a Lateral Fluid Percussion Injury Device

Maintenance of a Lateral Fluid Percussion Injury Device

Published on: April 21, 2023

Area of Science:

Pediatric burns
Trauma prevention
Consumer product safety

Background:

Treadmill use among children presents a significant risk for friction injuries.
Previous data on the incidence and severity of these injuries is limited.

Purpose of the Study:

To document the severity and incidence of treadmill-related injuries in children.
To advocate for the establishment and enforcement of safety standards for treadmills.

Main Methods:

A retrospective review of pediatric treadmill friction injuries.
Data collected from a single tertiary-level burns center in Australia (1997-2007).

Main Results:

37 children sustained treadmill friction injuries, accounting for 1% of all burns.
90% of injuries occurred in the last 3.5 years of the study period.
Injuries were severe (90% full or deep partial thickness), with 30% requiring skin grafts.

Conclusions:

Paediatric treadmill friction injuries are severe and increasing.
There is a critical need for Australian safety standards to be developed, implemented, and mandated.
Mandatory standards can reduce the incidence of these preventable injuries.