there was a free mass displcement scaling which was 15.3 mm/V and we had a forci

Question

there was a free mass displcement scaling which was 15.3 mm/V

and we had a forcing displacement of 2.83 mm pk-pk

Use the displacement scaling factor to convert into mm. In the table record the pk - pk displacement (2x) of the vibrating mass for the different settings of I and f. Note that it is quicker to change I for each setting off, instead of changing f for each I. Once steady state conditions have been established, the pk-pk displacement can be read directly from the digital recorder or computer. Record this as V, convert to mm later using the displacement scaling factor.

Explanation / Answer

given:

displacement scaling factor=15.3mm/V

hence the table would look like:

   I1           I2          I3
367.2           4131           3672
   4743           4743           4437
   8415           7803           6273
15300          12240           6579
41310          15912           6273
12240           9945           5508
   6273           6273           5202
   3366           3366           3672
1107.72         1132.2         1438.2

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