Calculate the value of the time constant for the instrument in Prob. 11.5 if c/cc = 0.65.
Prob. 11.5:
A seismic accelerometer is to be used to measure linear acceleration over a range from 30 to 300 m/s2. The natural frequency of the instrument is 200 Hz, and this value may vary by ±2 Hz owing to temperature fluctuations. Calculate the allowable uncertainty in the relative displacement measurement in order to ensure an uncertainty of no more than 5 percent in the acceleration measurement.