2-4 THREE CASES PARTICLE MOVES GRoovE AROUNO TRACK AT CaSTANT RELATIVE SPEED V CORIOLIS ACLELERRT\ON E GRv毛N0 W RADIAL GRooVE NOW VERTICA CR10L1s丹 CCELERATION 2WV V,- PoNENT oF RELATIVE VELOCITY L T0.×S0FR04T(0A