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Define friction. Why is frictional force termed as a contact force?

Answer» <html><body><p>Friction is the force resisting the relative motion of solid <a href="https://interviewquestions.tuteehub.com/tag/surfaces-1235815" style="font-weight:bold;" target="_blank" title="Click to know more about SURFACES">SURFACES</a>, fluid layers, and material elements sliding against each other.The force which <a href="https://interviewquestions.tuteehub.com/tag/always-373607" style="font-weight:bold;" target="_blank" title="Click to know more about ALWAYS">ALWAYS</a> opposes the motion of one body over another body <a href="https://interviewquestions.tuteehub.com/tag/frictional-465947" style="font-weight:bold;" target="_blank" title="Click to know more about FRICTIONAL">FRICTIONAL</a> force. It acts between the two surfaces which are in contact with each other. ... Since frictional force arises when the surface of two <a href="https://interviewquestions.tuteehub.com/tag/objects-20533" style="font-weight:bold;" target="_blank" title="Click to know more about OBJECTS">OBJECTS</a> are in <a href="https://interviewquestions.tuteehub.com/tag/touch-11256" style="font-weight:bold;" target="_blank" title="Click to know more about TOUCH">TOUCH</a> with each other ,therefore, frictional force is an example of contact</p></body></html>


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