a = (v^2)/R,
a₁ = (v^2)/R,
a₂ = (v^2)/(3R),
a₁/a₂ = ( (v^2)/R )/( (v^2)/(3R) ) = ( 1/R )/( 1/(3R) ) = 3R/R = 3.
a = (v^2)/R,
a₁ = (v^2)/R,
a₂ = (v^2)/(3R),
a₁/a₂ = ( (v^2)/R )/( (v^2)/(3R) ) = ( 1/R )/( 1/(3R) ) = 3R/R = 3.