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  2. Friction - Wikipedia

    en.wikipedia.org/wiki/Friction

    For example, static friction can prevent an object from sliding down a sloped surface. The coefficient of static friction, typically denoted as μ s, is usually higher than the coefficient of kinetic friction. Static friction is considered to arise as the result of surface roughness features across multiple length scales at solid surfaces.

  3. Newton's laws of motion - Wikipedia

    en.wikipedia.org/wiki/Newton's_laws_of_motion

    Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. These laws, which provide the basis for Newtonian mechanics, can be paraphrased as follows: A body remains at rest, or in motion at a constant speed in a straight line, except insofar as it is acted upon by ...

  4. Statics - Wikipedia

    en.wikipedia.org/wiki/Statics

    The static equilibrium of a particle is an important concept in statics. A particle is in equilibrium only if the resultant of all forces acting on the particle is equal to zero. In a rectangular coordinate system the equilibrium equations can be represented by three scalar equations, where the sums of forces in all three directions are equal ...

  5. Classical mechanics - Wikipedia

    en.wikipedia.org/wiki/Classical_mechanics

    This is an accepted version of this page This is the latest accepted revision, reviewed on 15 November 2024. Description of large objects' physics For other uses, see Classical Mechanics (disambiguation). This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find ...

  6. Force - Wikipedia

    en.wikipedia.org/wiki/Force

    The static friction increases or decreases in response to the applied force up to an upper limit determined by the characteristics of the contact between the surface and the object. [3] A static equilibrium between two forces is the most usual way of measuring forces, using simple devices such as weighing scales and spring balances.

  7. Guillaume Amontons - Wikipedia

    en.wikipedia.org/wiki/Guillaume_Amontons

    The first and second laws, which were founded by Amontons, and the third law, which was founded by Coulomb later, are called the Amontons-Coulomb laws of friction. (These 3 laws only apply to dry friction; the addition of a lubricant modifies the tribological properties significantly.)

  8. Lagrangian mechanics - Wikipedia

    en.wikipedia.org/wiki/Lagrangian_mechanics

    In a set of curvilinear coordinates ξ = (ξ 1, ξ 2, ξ 3), the law in tensor index notation is the "Lagrangian form" [18] [19] = (+) = (˙), ˙, where F a is the a-th contravariant component of the resultant force acting on the particle, Γ a bc are the Christoffel symbols of the second kind, = is the kinetic energy of the particle, and g bc ...

  9. Tribology - Wikipedia

    en.wikipedia.org/wiki/Tribology

    Tribology is the science and engineering of understanding friction, lubrication and wear phenomena for interacting surfaces in relative motion.It is highly interdisciplinary, drawing on many academic fields, including physics, chemistry, materials science, mathematics, biology and engineering. [1]