Note that they ask for minimum and maximum speeds. What happens when you take the curve too fast? Which direction do you tend to slip?Ricardeo Xavier said:
Follow the sequence of the questions asked by the problem.Ricardeo Xavier said:
Friction is a force that resists the relative motion between two surfaces that are in contact with each other. It occurs when two surfaces are in contact and moving against each other, or when one surface is moving against a stationary surface.
The amount of friction depends on the nature of the surfaces in contact, the force pressing the surfaces together, and the relative speed at which the surfaces are moving or attempting to move against each other.
Friction is measured by the coefficient of friction, which is the ratio of the force required to move an object over a surface to the weight of the object. It is a unitless value and can vary depending on the surface materials and conditions.
There are three types of friction: static, kinetic, and rolling. Static friction occurs when two surfaces are not moving against each other, but there is resistance to start the movement. Kinetic friction occurs when two surfaces are in motion against each other. Rolling friction occurs when an object is rolling over a surface.
Friction is essential in everyday life and has many practical applications. It allows us to walk, drive, and hold objects without slipping. It is also used in many machines and devices, such as brakes in cars and pencils writing on paper. Friction is also used in sports, such as in the grip of shoes for running and the grip of a bat in baseball.