Frictional Forces

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Frictional Forces

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Frictional Forces

Post Number: #1 by Jessica » September 14th, 2013, 2:57 pm

Whenever an object moves or attempts to move along a surface, there is a force parallel to the surface in the opposite direction to motion or motion attempt.

Static Friction
If an object is pulled with increasing force, the force of static friction f[subs]s[/subs] also increases to exactly balance the applied pulling force.

When the pulling force just exceeds a critical value for the force of static friction, f[subs]s[/subs]^MAX, the object begins to move.