What is rolling friction ? Write laws of rolling friction. Define coefficient of rolling friction.

What is rolling friction ? Write laws of rolling friction. Define coef

1.	What is rolling friction ? Write laws of rolling friction. Define coefficient of rolling friction.
Answer» <html><body><p></p>Solution :Whenbody isrollingwithoutslidingfrictionforceis calledrollingfrictionit is denoted by`f_(r )`<br/> Duringrollingthe surfacein contactgetmomentarilydeformeda littleand smallpart ofbodyremainin contactwith surface<br/>Asa resultthere is componentof the contactforceparallelto surfacewhichopposesmotion<br/> `mu_(<a href="https://interviewquestions.tuteehub.com/tag/f-455800" style="font-weight:bold;" target="_blank" title="Click to know more about F">F</a> ) ltmu_(k)<a href="https://interviewquestions.tuteehub.com/tag/gt-1013864" style="font-weight:bold;" target="_blank" title="Click to know more about GT">GT</a> mu_(s)`</body></html>