HI all wonder if anyone can help im banging my head on this one! If i have 2 discs of a given material with smooth edges (imagine 2 gears side to side but no teeth) How do i calculate the required force to create enough friction to transmit a given amount of torque between the 2? i have the coefficent of friction for the 2 materials and the torque required but im struggling with the area of contact between the 2 edges (a straight line contact i think?) and the force required to stop slip. Ive got a feeling this has something to do with the normal force?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks in advance harry

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# Friction and forces in rollers

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