I have to do some dataacquisition from a car with some accelerometers. 4 accelerometers is placed on the wheels before the shock absorber. And i need to calculate the maximum applied G-force on the accelerometers. Just an approximately value, not taking in account the type of wheel, airpressure in wheel etc. Scenario 1: Steady speed of the car driving on normal tarmac is 110km/h. Weight of car is 2000kg The car is driving over a small bump with a height of 5cm Scenario 2: Steady speed is 50km/h Weight 2000kg The car is driving over a regular speedbump, approximately height of 30cm Seeing the bump on the wheel as if was a regular spring, i would calculate acceleration from A=5cm ω=sqrt(k/m) (not knowing the spring constant, i just took some samples from 0-500Hz as a value, whats realistic here?) a=-ω^2*A*cos(ω*t) with a.max being -ω^2*A and then divide final max acceleration with 9.8m/s^2. But this seem to give me abnorm large value of g-force. Any help, to how to calculate this the right way?