Friction and Ground Reaction Force.pdf

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Electrical Engineering and Computer Science
EECS 1520
All Professors

Friction and Ground Reaction Force FrictionForce that acts between two surfaces on contactFor friction to occur there must be applied force perpendicular to the surface plane o If you have a box placed on a flat surface there is no friction but there IS a potential friction o If this same box is pushed slightly to the right a friction force is pushing back to the left negating any change in position o However you push a little more and the box does move dynamic frictionThe magnitude of kinetic friction is constant and lower than the maximum static friction o Friction is greatest JUST before the object moves Static frictionThe force applied is exactly equal to the force of frictionGreater surface area DOES NOT increase friction o If you have a smaller box vs a bigger box there is no difference in friction Magnitude of Friction Depends
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