A smooth insulating ring of radius R with a bead having

Last updated: 6/10/2023

A smooth insulating ring of radius R with a bead having charge q is placed horizontally and in a uniform magnetic field of strength B and perpendicular to the ring plane Starting from t 0 the magnetic field is changed to B t B at where a is a positive constant The contact force between the ring and bead as a function of time is Neglect gravity aq Rt 1 3 m 2B at aq Rt B at 4m 2 4 aq Rt 4m 2B at 4aq Rt m 2B at