Explain the concept of rolling friction and dis... - SS2 Physics Mechanics - Laws of Motion Question

Rolling friction is a type of friction that occurs when an object rolls over a surface. Unlike sliding friction, which occurs between surfaces in relative motion, rolling friction involves deformation and recovery of the object and the surface it rolls on. The magnitude of rolling friction depends on several factors, including:

- Nature of the surfaces: Softer materials or materials with higher elasticity tend to exhibit higher rolling friction.

- Surface roughness: Rougher surfaces can increase rolling friction due to increased contact area and deformation.

- Load or weight of the object: Rolling friction is generally proportional to the weight or load on the object.

- Wheel or surface properties: The design and characteristics of the rolling object, such as the size, shape, and material of the wheels, can influence rolling friction.

- Lubrication: The presence of lubricants or oils can reduce rolling friction by minimising surface-to-surface contact and reducing frictional forces.