The period of simple harmonic motion of a spiral spring or elastic thr

1.	The period of simple harmonic motion of a spiral spring or elastic thread is given by:
A.	T = 2? × ( extension_produced ⁄ ?gravitational_field_strength )
B.	T = 2? × ( extension_produced ⁄ gravitational_field_strength )
C.	T = 2? × ?( extension_produced ⁄ gravitational_field_strength )
D.	T = 2? × (?( extension_produced) ⁄ gravitational_field_strength )
Answer» D. T = 2? × (?( extension_produced) ⁄ gravitational_field_strength )

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The period of simple harmonic motion of a spiral spring or elastic thread is given by:

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