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What is the Difference Between Sliding Friction and Rolling Friction?

1 Answers

StJeremiah

07/29/25 2:59pm

Rolling friction and sliding friction differ in that: the two friction surfaces in sliding friction are fixed, whereas in rolling friction, one of the friction surfaces changes, with the contact points continuously altering. Rolling friction refers to the friction generated when an object rolls over another object; sliding friction refers to the frictional force produced when an object slides along the surface of another object. Friction can be categorized into static friction, sliding friction, and rolling friction, with specific descriptions as follows: 1. Sliding friction: refers to the frictional force generated when an object slides along the surface of another object. The direction of the sliding friction force acting on the object is opposite to its direction of motion, hence friction is produced. 2. Static friction: refers to the scenario where a very small force is applied to push an initially stationary object. Even if the object does not move, it has already generated friction with the ground. The object must overcome the maximum static friction to begin sliding. 3. Rolling friction: under normal circumstances, rolling friction is only 1/40 to 1/60 of sliding friction resistance. Therefore, rolling an object on the ground requires much less effort than pushing it to slide.

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