A manufacturer of vibration-measuring instruments gives the following specifieations for one of its vibration pickups:
Frequency range: Velocity response flat from 10 to 1000 cps. Sensitivity: 0.096 V/cm/s, both volts and velocity in rms values. Amplitude range: Almost no lower limit to maximum stroke between stops of 0.60 in.
(a) This instrument was used to measure the vibration of a machine with a known frequency of 30 cps. If a reading of 0.024 V is indicated, determine the rms amplitude.
(b) Could this instrument be used to measure the vibration of a machine with known frequency of 12 cps and double amplitude of 0.80 cm? Give reasons.