Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Gas Laws: Boyle's, Gay-Lussac, Charles', Avogadro's, and Ideal Gas Law03:19

Gas Laws: Boyle's, Gay-Lussac, Charles', Avogadro's, and Ideal Gas Law

76.7K
Through experiments, scientists established the mathematical relationships between pairs of variables, such as pressure and temperature, pressure and volume, volume and temperature, and volume and moles, that hold for an ideal gas.
76.7K
Kinetic Friction01:26

Kinetic Friction

1.4K
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...
1.4K
Types of Friction Problems01:27

Types of Friction Problems

971
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....
971
Friction: Problem Solving01:21

Friction: Problem Solving

487
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...
487
Third Law of Thermodynamics02:38

Third Law of Thermodynamics

21.7K
A pure, perfectly crystalline solid possessing no kinetic energy (that is, at a temperature of absolute zero, 0 K) may be described by a single microstate, as its purity, perfect crystallinity,and complete lack of motion means there is but one possible location for each identical atom or molecule comprising the crystal (W = 1). According to the Boltzmann equation, the entropy of this system is zero.
21.7K
Second Law of Thermodynamics02:49

Second Law of Thermodynamics

26.8K
In the quest to identify a property that may reliably predict the spontaneity of a process, a promising candidate has been identified: entropy. Processes that involve an increase in entropy of the system (ΔS > 0) are very often spontaneous; however, examples to the contrary are plentiful. By expanding consideration of entropy changes to include the surroundings, a significant conclusion regarding the relation between this property and spontaneity may be reached. In thermodynamic models, the...
26.8K

You might also read

Related Articles

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

Sort by
Same author

Respiratory pathogen dynamics in community fever cases: Jiangsu Province, China (2023-2024).

Virology journal·2024
Same author

Sly-miR398b Mediates Mature Leaf Flattening by Orchestrating Auxin and H<sub>2</sub>O<sub>2</sub> Signalling in Tomato.

Plant, cell & environment·2024
Same author

Serotonin release in the habenula during emotional contagion promotes resilience.

Science (New York, N.Y.)·2024
Same author

Needle-Shaped Biosensors for Precision Diagnoses: From Benchtop Development to In Vitro and In Vivo Applications.

Biosensors·2024
Same author

Identification and characterization of new Siberian subtype of tick-borne encephalitis virus isolates revealed genetic variations of the Chinese strains.

Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases·2024
Same author

Advances in the Clinical Application of High-throughput Proteomics.

Exploratory research and hypothesis in medicine·2024
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Jan 26, 2026

Shrinky-Dink Hanging Drops: A Simple Way to Form and Culture Embryoid Bodies
07:23

Shrinky-Dink Hanging Drops: A Simple Way to Form and Culture Embryoid Bodies

Published on: March 5, 2008

15.4K

Simple Law for Third-Body Friction.

Fei Deng1, Georgios Tsekenis1, Shmuel M Rubinstein1,2

  • 1Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.

Physical Review Letters
|April 24, 2019
PubMed
Summary
This summary is machine-generated.

Understanding friction requires isolating variables. This study reveals that friction depends on the size ratio between surface features and particles, not their absolute size or surface roughness, offering insights for lubrication strategies.

More Related Videos

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall
12:21

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Published on: January 6, 2023

4.8K
Hydrogen Charging of Aluminum using Friction in Water
07:50

Hydrogen Charging of Aluminum using Friction in Water

Published on: January 28, 2020

6.5K

Related Experiment Videos

Last Updated: Jan 26, 2026

Shrinky-Dink Hanging Drops: A Simple Way to Form and Culture Embryoid Bodies
07:23

Shrinky-Dink Hanging Drops: A Simple Way to Form and Culture Embryoid Bodies

Published on: March 5, 2008

15.4K
Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall
12:21

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Published on: January 6, 2023

4.8K
Hydrogen Charging of Aluminum using Friction in Water
07:50

Hydrogen Charging of Aluminum using Friction in Water

Published on: January 28, 2020

6.5K

Area of Science:

  • Tribology
  • Materials Science
  • Physics

Background:

  • Friction is complex due to multiple simultaneous physical mechanisms.
  • Understanding third-body friction is crucial for many applications.
  • Previous research often involves confounding factors like wear and fracture.

Purpose of the Study:

  • To investigate third-body frictional dynamics in a simplified experimental system.
  • To isolate the elastic interaction between sliding surfaces and third bodies.
  • To determine the key factors influencing frictional dissipation.

Main Methods:

  • Developed a model experimental system eliminating first-body interactions, wear, and fracture.
  • Simultaneously visualized particle motion and measured global shear force.
  • Systematically varied the number and size of foreign particles relative to surface features.

Main Results:

  • Frictional dissipation is primarily dependent on the size ratio between surface asperities and third-body particles.
  • Friction increases linearly with particle number when particle size is comparable to surface features.
  • Friction increases sublinearly with particle number when particles are smaller than surface features.
  • Particle size and surface roughness did not significantly impact friction beyond their role in the size ratio.

Conclusions:

  • The size ratio between surface features and contaminants is a critical parameter for controlling friction.
  • Matching particle size to surface features is a potential strategy for reliable lubrication.
  • This research provides a fundamental understanding of third-body friction dynamics.