Static Friction. Holding in Place. Objects on an incline will often stay put. There must be a force that holds the object in place. Static friction is from the contact of resting objects. Force holds up to a certain point Force is based on the type of contact (rough, smooth)
ms is the coefficient of static friction
Forces balance on mass 1
Tension is equal on the rope
Forces balance on mass 2
m2Measuring Friction: Pulley
The pulley determines the coefficient of friction through the ratio of masses.
m2Coefficient of Friction: Pulley
One component of gravity balances the normal force
The other component of gravity balances friction
qMeasuring Friction: Incline
The incline determines the coefficient of friction through the tangent of the angle.
qCoefficient of Friction: Incline