Question 5 Figure Q5 shows a simple model of a motor vehicle that can vibrate in the vertical direction while traveling over a rough road The vehicle has a mass of 1200 kg The suspension system has a spring constant of 400 kN/m and a damping ratio of = 05 If the vehicle speed is 20 km/h, determine the displacement amplitude of the vehicle The road surface varies sinusoidally with an amplitude of Y = 0 05 m and a wavelength of 6m [15] A(1) 848 ele y(1) Road surface x(1) y(1) 00000 One cycle (a) 171 1 km/hr (b) v(r) Lopyright 2011 andrason FIGURE Q5 = Y sin cu!