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What is the ratio of frictional force to the normal force ?​
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What is the ratio of frictional force to the normal force ?​

User Tumharyyaaden
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Answer:

Coefficient of friction (COF) is a dimensionless number that is defined as the ratio between friction force and normal force (Eqn (2.1)). Materials with COF smaller than 0.1 are considered lubricous materials. COF depends on the nature of the materials and surface roughness.

Step-by-step explanation:

User Mises
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