Rolling Friction

Rolling friction is the force that resists the motion of a rolling object, such as a wheel or a ball, across a surface. It occurs when an object rolls over a surface, and is caused by the deformation of the object and the surface it is rolling on.

Factors Affecting Rolling Friction

Several factors can affect rolling friction, including:

• Surface roughness
• Weight of the object
• Shape and size of the object
• Type of material of the object and the surface

Comparison with Sliding Friction

Rolling friction is generally lower than sliding friction, which is the force that resists the motion of a sliding object. This is why it is easier to push a heavy object on wheels than to drag it along the ground.

Applications of Rolling Friction

Rolling friction is utilized in various everyday applications, such as in vehicles with wheels, bearings, and conveyor belts. It is also important in sports equipment, such as balls and skates, where reducing friction is essential for smooth movement.

Study Guide

To understand rolling friction, consider the following key points:

1. Define rolling friction and explain its causes.
2. Discuss the factors that affect rolling friction.
3. Compare rolling friction with sliding friction.
4. Describe real-life applications of rolling friction.
5. Perform experiments to measure and analyze rolling friction in different scenarios.

[Rolling Friction] Related Worksheets and Study Guides:

• Force and motionScience • First Grade