The cantilever beam oscillates at a sinusoidal frequency of 75Hz. An accelerometer picks up the vibration signal at a sampling rate of 100Hz. The data acquisition equipment has the number of data points N in a range of 200 to 300. (1) Find the alias frequency in this case? (2) What will be the smallest number 300>N>200 of data point to avoid the leakage? Write your calculation here: Fm=75HzFs=100HzFn=100/2=50Fm/Fn=75/50=1.5>1 Fa=21.5fn=.550=25HzN=100/75=4/3 White your answer here: 1 Alias frequencr =25Hz 2. Number of data point: 204 points