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What is the unit of coefficient of friction?

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The coefficient of friction is dimensionless (means it has no units) since it is a ratio of two similar quantities. Its purely a number
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Actually coefficient of friction means friction between any two bodies without at rest. i.e. either one body is moving or both are moving in opposite direction. Formula : Force of friction = coefficient of friction . Normal Force Therefore , Coefficient of friction = Force of friction / Normal Force Hence...
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Actually coefficient of friction means friction between any two bodies without at rest. i.e. either one body is moving or both are moving in opposite direction. Formula : Force of friction = coefficient of friction . Normal Force

Therefore ,

Coefficient of friction = Force of friction / Normal Force

Hence , units get cancelled...

So, coefficient of friction is dimensionless i.e. unitless quantity...

 

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The coefficient of kinetic friction is the force between two objects when one object is moving, or if two objects are moving against one another. The coefficient of friction is dimensionless, meaning it does not have any units. It is a scalar, meaning the direction of the force does not affect the physical...
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The coefficient of kinetic friction is the force between two objects when one object is moving, or if two objects are moving against one another. The coefficient of friction is dimensionless, meaning it does not have any units. It is a scalar, meaning the direction of the force does not affect the physical quantity. read less
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Teacher

Coefficient of friction is ratio of frictional force to the normal reaction so it is unitless or dimensionless.
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Mathematics Tutor giving in depth knowledge of even simple concepts

The coefficient of friction is dimensionless (means it has no units) since it is a ratio of two similar quantities. Its purely a number
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