From the following data, calculate natural frequency of free torsiona – McqOptions

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1.	From the following data, calculate natural frequency of free torsional vibrations in Hz.l1=0.6m, l2=0.5m, l3=0.4md1=0.095m, d2=0.06m, d3=0.05mMa = 900 Kg, Mb = 700 Kgka = 0.85m, kb = 0.55mC = 80 GN/m2
A.	3.37
B.	7.95
C.	6.95
D.	5.95
Answer» B. 7.95

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