Rolling Contact

Peit ia ki dur ba itynnad ba la thaw da ka jingshad pyllun kane kapliang kaba don ka thliew hapdeng ne ka ‘circular disc’ ha u ne u nar hapdeng. Phi lah ban antad kumno kane ka pliang ne ‘circular disc’ ka shad pyllun? Ha jingshisha une u nar hapdeng u dei u magnet uba shad pyllun namar u don u motor ha rieh. Ka rud jong kane ka pliang ne ‘circular disc’ ka don ka kynja nar ba stang bha bad dei kane kaba pyniabit ia ka bad u magnet bad dei na kane ka bor jingsnoh jong u magnet ne ka ‘magnetic coupling’ ba kane ka ‘circular disc’ ruh ka shad pyllun.