h = a*t²/2 => an = 2*h/t²
L = 2*π*R => φ = 2*π * h/L = 2*π * h / (2*π*R) = h/R
an = ω²*R => ω = √(an/R) = √(2*h/(t²*R)) = √(2*h/R) * 1/t
φ = h/R = β*t²/2 => β = 2*h/(R*t²)
aτ = β*R = 2*h*R/(R*t²) = 2*h/t²
a = √(an² + aτ²) = √(2*h/t² + 2*h/t²) = 2/t * √h