JEE Main Physics question
A 0.1 kg mass is suspended from a wire of negligible mass. The length of the wire is 1 m and its cross-sectional area is . If the mass is pulled a little in the vertically downward direction and released, it performs simple harmonic motion of angular frequency . If the Young's modulus of the material of the wire is , the value of is
Answer: (A)
Solution
The wire behaves as a spring of force constant , and , so .
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