Table 2.

The modelled resonant frequencies (Hz) of first eight modes for various loads

Modes	No load	Air	Water
(0, 1)	37,772	37,270	–
(1, 1)	78,447	77,562	16,320
(2, 1)	128,390	127,330	33,660
(0, 2)	146,330	145,400	35,122
(3, 1)	187,340	186,100	55,884
(1, 2)	223,070	221,900	65,745
(4, 1)	255,100	253,660	83,448
(2, 2)	309,350	307,930	102,580