B A circular ring having mass M 4 m and radius R is attached

Last updated: 6/5/2023

B A circular ring having mass M 4 m and radius R is attached to a small smooth ring of mass m kept at point A The ring is threaded onto a horizontal fixed frictionless wire Initially the bigger ring is held horizontally alongside the wire in such a manner that initially the planes C both the rings are at 90 to each other and the planes of smaller and bigger rings are perpendicular to th plane of the paper x y plane Now the bigger ring is released from rest After release the planes smaller and bigger ranges remain perpendicular to the plane of paper x y plane 36 The speed of small ring at this instant is 5 A gR C gR 20 15 B 8 4 2 gR 85 gR y