the friction force is the centripetal force.Nishikino Maki said:That actually makes sense because on a level curve the friction and centripetal forces are the only ones pointing to the center.
yes, where u is the coefficient of static friction, not kinetic friction.Then I suppose it would be when the velocity of the car is greater than [itex]\sqrt{µgr}[/itex]?
Kinetic friction is the force that acts between two surfaces in contact with each other when one of the surfaces is in motion. It is caused by irregularities in the surfaces and results in the resistance to the motion of an object.
Kinetic friction occurs when two surfaces are in motion, while static friction occurs when two surfaces are at rest. Kinetic friction is generally weaker than static friction and reduces in strength as the object's speed increases.
Kinetic friction is measured using a force sensor, which measures the amount of force needed to overcome the resistance of the two surfaces in motion. The unit of measurement for kinetic friction is Newtons (N).
The circular track creates a continuous curve, which changes the direction of motion of an object. This change in direction causes the object to experience a perpendicular force, known as centripetal force, which affects the amount of kinetic friction acting on the object.
Understanding kinetic friction on a circular track has practical applications in fields such as engineering, sports, and transportation. It can help in designing better tires for vehicles, improving the performance of roller coasters, and optimizing the movement of athletes in sports such as ice skating and cycling.