• # question_answer When a vehicle travels on a rough road whose undulations can be assumed to be sinusoidal, the resonant conditions of the base-excited vibrations, are determined by the: A) Mass of the vehicle, stiffness of the suspension spring, speed of the vehicle, wavelength of the roughness curveB) Speed of the vehicle onlyC) Speed of the vehicle and the stillness of the suspension springD) Amplitude of the undulations

$\beta =\frac{\omega }{{{\omega }_{n}}},$ ${{\omega }_{n}}=\sqrt{\frac{k}{m}},\,\,\omega =\frac{v}{\lambda }$ Where v = vehicle speed, $\lambda \,\,=\,\,$wave length of rod undulations                         $\therefore \,\,\,\,\,\,\,\,\,\,\,\beta \,\,=\,\,f\,(m,k,v,\lambda )$