Magnetic takeoff

A thin charged loop with a charge \(q>0\) (uniformly distributed) and mass \(m\) is placed on a ramp which forms and angle \(\alpha= 45^{\circ}\) with the horizontal. Due to the presence of an external homogeneous magnetic field of magnitude \(B\) directed into the page, the loop "takes off" after a time \(t^{*}\). Determine the time \( t^{*}\) in seconds if \[ \frac{q B}{m}= 1~\mbox{s}^{-1}. \] Assume that the loop rolls without slipping while in contact with the ramp.

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