Forces: Chapter 4 and 5
Forces: Chapter 4 and 5
Forces: Chapter 4 and 5
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F a : an applied force a push or pull you exert on an objectF N : the normal force a force that acts perpendicular to the surfaceon which an object restsNOTE: "normal" means perpendicularF f : the force of friction a force that opposes an object's motionstatic frictional force (F fs ) exists when you start to move anobject from restkinetic frictional force (F fk ) exists while an object is in motionF f = μF NF f > force of friction (N)μ > coefficient of frictionF N > normal force (N)F T : tension the force that acts along a rope, wire, string,etc.5
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