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The coefficient of friction (COF), often symbolized by the Greek letter μ, is a dimensionless scalar value which equals the ratio of the force of friction between two bodies and the force pressing them together, either during or at the onset of slipping. The coefficient of friction depends on the materials used; for example, ice on steel has a ...
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The SI unit of force is the newton (symbol N), which is the force required to accelerate a one kilogram mass at a rate of one meter per second squared, or kg·m·s −2.The corresponding CGS unit is the dyne, the force required to accelerate a one gram mass by one centimeter per second squared, or g·cm·s −2. A newton is thus equal to ...
Now consider that a tangential force is applied that is lower than the Coulomb friction bound . The center of the sphere will then be moved sideways by a small distance that is called the shift. A static equilibrium is obtained in which elastic deformations occur as well as frictional shear stresses in the contact interface.
Stokes' law, for friction force; Stokes' law (sound attenuation), describing attenuation of sound in Newtonian liquids; See also. Stokes' theorem, in integration
According to the Albanian Constitution, the Albanian Armed Forces are charged to: protect the territorial integrity of the country, be present in areas incurring menace, assist the population in case of natural and industrial disasters, warn the dangers of military and non-military nature, protect the constitutional order as it is determined by law and participate in international operations ...
The Albanian People's Army Air Force was formed in 1947 with a gift of twelve Yakovlev Yak-3 fighters and a few Polikarpov Po-2 biplane trainers from the Soviet Union, with Soviet personnel seconded as instructors and advisers. [1] The Albanian Air Force was officially established on April 24, 1951.
The Albanian Naval Force (Albanian: Forca Detare të Republikës së Shqipërisë) is the naval branch of the Albanian military. Their name was changed from the Albanian Naval Defense Forces in 2010. [ 2 ]