Riders in a roller-coaster loop of radius momentarily experience zero apparent weight…

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

Riders in a roller-coaster loop of radius

12\,\text{m}

momentarily experience zero apparent weight at the top of the loop. Calculate the speed the train must have at that point.