Is rolling act on tyre ??
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1 )Rolling resistance ,sometimes called rolling friction or rolling drag ,is the force resisting the motion when a body (for e.g.,tyre ,ball or wheel)rolls on a surface .
2 )In analogy with sliding friction, rolling resistance is often expressed as a coefficient times the normal force.
3 )The slower you ride, the more rolling resistance affects your speed. So weak riders or long-distance riders of any strength should pay attention to this. And the faster you ride, the more speed presumably matters to you (e.g. racing), so rolling resistance still matters then.
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