2. The vehicle in Fig, 2 has a m nass of 1.5 Mig and mass center at G. If the front two springs each have a stiffness of kA = 58 kN/m and the rear tw wo springs each have a stiffness of kB = 65 kN/m. Determine their compression when the car is parked on a 30°incline. Additionally, what friction force FB must be applied to each rear wheel to hold the vehicle in equilibrium? (35%)
2. A cylinder (cross-sectional diameter of 0.01128 m) containing chloropicrin (CCl3NO2) is placed in a hood. The hood has a blower system that continually circulates dry air at a constant temperature 25℃ and 1 atm pressure. Originally, the liquid surface is 0.0388 m from the top of the cylinder. After one day the liquid level is 0.0412 m below the top. The vapor pressure and density of CCl3NO2 are 3178.3 N/m2 and 1650 kg/m3, estimate the substances diffusivity in air. Molecular weight of CCl3NO2 is 164.39. (20%)