Empirical measurements of the static friction
Static friction is friction between two or more solid objects that are not moving relative to each other. The coefficient of static friction, typically denoted as μs, is usually higher than the coefficient of kinetic friction.
The static friction force must be overcome by an applied force before the object is able to move.
The static coefficient of friction is measured on an inclined plane. This incline is increased (slider h) until the brick begins to slide. At this point, the inclined plane is locked and the angle can be read. The tangent of this angle is the coefficient of friction:
Click on h slider, then use the arrow or +/- keys for finer control of that parameter.
Click on the "friction" button to generate a new random value of μs.