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importance of friction force. There are any references about importance of friction force in here. you can look below.
importance of friction force
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what is the importance of friction
uses of frictional force
advantages of frictional force
what is the force of friction
what is the role of friction
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what does friction force depend on
why is friction important
how does friction affect forces applied
why is friction useful
importance of friction force, advantage of friction force, what is the importance of friction, uses of frictional force, advantages of frictional force, what is the force of friction, what is the role of friction, how does friction affect force, what does friction force depend on, why is friction important, how does friction affect forces applied, why is friction useful
