Friction types

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Physical Science

9th

Last updated 2:42 AM on 12/9/22

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the 2 variables that impact friction are...

1. kinds of surfaces that are touching each other
2. force pressing the surfaces together

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static friction

friction that prevents two surfaces from sliding past each other (makes it harder to start moving something)

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sliding friction

friction that opposes the motion of two surfaces sliding past each other

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rolling friction

static friction acting over an area where a wheel touches a surface

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friction

force that opposes the sliding motion of two surfaces touching each other