Friction
This force opposes the motion of two surfaces in contact.
What is Friction?
The component of gravitational force acting down an incline depends on this trigonometric function.
What is sine?
The force of friction on an incline opposes this force component.
What is the parallel component of gravity?
The formula for the force of friction, F_f , involves this coefficient.
What is the coefficient of friction?
\mu
The normal force on an incline is reduced by this trigonometric factor of gravity.
What is cosine?
The net force on an inclined plane with friction is calculated by subtracting this force from the parallel component of gravity.
What is the force of friction?
The force of friction depends on these two factors.
What are the coefficient of friction and the normal force?
On an inclined plane without friction, the acceleration down the plane is given by this formula.
What is
a = g*sin \theta ?
If a block slides down an incline with acceleration, the frictional force can be calculated using this formula.
What is
\( F_f = \mu F_N \)
, where
\( F_N \)
is the normal force?
When an object just starts to move, this type of friction acts on it.
What is static friction?
The gravitational force on a block on an inclined plane can be broken into these two components.
What are parallel and perpendicular components?
On an inclined plane with friction, the condition for the object to remain stationary involves this equality.
What is
F_f=F_{g ||}
?
If an object slides down a surface at constant velocity, the net force acting on it is this.
What is zero?
The net force on an object down an incline is directly proportional to this angle of the incline.
What is the sine of the angle?
On an incline with friction, the maximum angle at which an object remains stationary is called this.
What is the angle of repose?