Q 40 A wooden disc of mass M and radius R has a single loop

Last updated: 6/9/2023

Q 40 A wooden disc of mass M and radius R has a single loop of wire wound on its circumference It is mounted on a massless rod of length d The ends of the rod are supported at its ends so that the rod is horizontal and disc is vertical A uniform magnetic field Bo exists in vertically upward direction When a current I is given to the wire one end of the rod leaves the support Find least value of I d 2 A d 2 O Bo B