In the absence of a transverse load , formula _ 5 , we have the free vibration equation . In the absence of a cross load , Formula 5 , we have the equation of free vibration .
Jika tiada beban melintang, formula_5, kita mempunyai persamaan getaran bebas. Sekiranya tiada beban silang, Formula 5, kita mempunyai persamaan getaran bebas.