JEE Advanced 2020 Concept Recapitulation Test 3 Paper 2

Two identical ring I and | of equal mass ' m ' and radius ‌∘R′ are moving in opposite direction with linear speed ωR and 2ωR respectively. Rings are rotating with equal angular speed in opposite direction. The line joining the centres make an angle of 30∘ with the velocity. Then, at the given instant (AB=6R)