Rotational motion is the movement of an object around an axis or center point. It is characterized by the object's angular displacement, velocity, and acceleration.
Rotational motion differs from linear motion in that it involves circular or curved paths, rather than straight lines. Additionally, rotational motion is described in terms of angular displacement, velocity, and acceleration, while linear motion is described in terms of distance, speed, and acceleration.
The formula for finding the frictional force in rotational motion is F = μN, where F is the frictional force, μ is the coefficient of friction, and N is the normal force exerted on the object.
The coefficient of friction is a measure of the roughness or smoothness of the surfaces in contact. A higher coefficient of friction will result in a greater frictional force, while a lower coefficient of friction will result in a smaller frictional force.
The normal force is the force exerted on an object by the surface it is in contact with. The frictional force is directly proportional to the normal force, meaning that an increase in the normal force will result in an increase in the frictional force.