Friday, 1 November 2019

newtonian mechanics - Why does a ball rolling without slipping stop due to friction?



I'm confused on a scenario. If we roll a ball on a horizontal surface and it rolls without slipping it should eventually stop due to friction. However rolling without slipping means the velocity at the point of contact is always 0. Since kinetic friction always opposes movement and the point of contact has v=0 there's no kinetic friction and static friction only arises when there is some force. Thus there is no friction? Can anyone clarify what is happening, and point to where I'm confused.




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