A 10 Kg Mass Is Attached to the End of a 2.00

Multiple Choice

A 10 kg mass is attached to the end of a 2.00 m brass rod with a 1 mm diameter.If the tensile modulus of brass is 9.10 $\times$ 10¹⁰ N/m²,then the frequency of the simple harmonic motion of the mass is

A) 6.20 Hz.
B) 7.51 Hz.
C) 7.95 Hz.
D) 8.21 Hz.
E) 9.51 Hz.