A 100 Kg Mass Is Attached to the End of a a 2.00

question 80

Multiple Choice

A 10.0 kg mass is attached to the end of a 2.00 m long brass rod, which has a diameter of 1.00 mm and negligible mass. The mass at the end is pulled, stretching the rod slightly, and then released. If the elastic modulus of brass is 9.10 × 10¹⁰ N/m², then the period of the resulting oscillations is

• A) 0.175 sec.
• B) 0.105 sec.
• C) 0.133 sec.
• D) 0.145 sec.
• E) 0.167 sec.

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