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--- physics:forces [2021/01/24 06:34] – more on tension ig epix
+++ physics:forces [2021/03/11 03:09] (current) – [Tension] added link to incline plane epix
@@ Line 20: / Line 20: @@
 ===== Friction =====
-Friction is a force caused by the collision of surfaces that are inherently uneven. It is mathematically defined as $F_r = \mu F_n$ where $F_r$ is friction, $F_n$ is the normal force((opposing force of weight when object is resting on a surface)), and $\mu$ being the coefficient of friction(([[physics:newtons_laws_of_motion|Newton's second law]] is useful here if you want to find the friction coefficient given an acceleration without mass present)).
+Friction is a force caused by the collision of surfaces that are inherently uneven. It is mathematically defined as $F_r = \mu F_n$ where $F_r$ is friction, $F_n$ is the normal force((opposing force of weight when object is resting on a surface)), and $\mu$ being the coefficient of friction(([[physics:newtons_laws_of_motion|Newton's second law]] is useful here if you want to find the friction coefficient given an acceleration without mass present)). The coefficient of friction is a uniform value((0-1 linear value)). There are two types of friction.
+==== Static Friction ====
+This type of friction prevents an object from sliding against another surface parallel to the contact area.
+==== Kinetic Friction ====
+This type of friction slows an object instead of preventing its movement. Direction is opposite to the object's net force.
 ===== Tension =====
+See: [[physics:solving_tension_problems|Solving Tension Problems]], also [[physics:incline_plane|Solving Incline Plane Problems]] for Tension on an incline plane.
 Tension is a force that a rope((/string/chain)) exerts pulling one object to another.

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