Derive an expression for the minimum speed that a small body must have at the lowest…

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

Problem

Derive an expression for the minimum speed

v_{\text{min}}

that a small body must have at the lowest point of a vertical circular loop of radius

R

so that it just maintains contact with the track at the highest point.