Thanks for replying, I've done this;
va=Ra*wa
va=Rb*wb
da=va*ta
db=vb*tb
I need to compute the period for the two objects to meet knowing that wa≠wb and that initially they form angle θ.
Given two particles A and B realizing circular motion respectively on circles with same center o and of radii RA and RB where RA<RB. There angular velocities wA and wB are constant and initially the two objects form an angle θ.
How long should the object A waits before he crosses object B...