- #1
lezard1
- 10
- 0
Homework Statement
I preformed a experiment to find the joules of work taken for my elastic band car to travel a distance of 18.1 meters
Does my result seem correct?
Last edited:
Rolling friction is the force that opposes the motion of a rolling object, such as a wheel or ball, on a surface. It is caused by the deformation of the object and the surface it is rolling on.
Rolling friction is generally less than sliding friction. This is because rolling objects have a smaller contact area with the surface, resulting in less force needed to overcome the friction. Additionally, rolling friction is usually kinetic, meaning it only occurs when the object is in motion, while sliding friction is both kinetic and static, meaning it can occur when the object is stationary as well.
The formula for rolling friction is F = μN, where F is the rolling friction force, μ is the coefficient of rolling friction, and N is the normal force between the object and the surface. The coefficient of rolling friction is a constant that depends on factors such as the materials of the object and the surface, and is usually smaller than the coefficient of sliding friction.
Rolling friction does negative work on an object, meaning it decreases the object's kinetic energy. This is because the force of rolling friction is in the opposite direction of the object's motion, resulting in a loss of energy as the object rolls.
Rolling friction is present in many everyday activities, such as riding a bike, driving a car, or playing sports that involve a ball rolling on a surface. It is also important in industrial applications, such as the use of rolling bearings in machinery and the design of wheels for vehicles.