A 1024 Hz Tuning Fork Is Dangled at the End $^{\circ}$

A 1024 Hz tuning fork is dangled at the end of a string such that its center of mass is 1.2 m below the point at which the other end of the string is attached to door frame,making a pendulum of sorts.The tuning fork may be treated as a point mass for the purposes of this problem.If the pendulum is brought to a maximum angle and released.If the range of frequencies heard by an observer standing in the plane of the pendulum's motion is 1020-1028 Hz,what is the angle to which the pendulum was raised? The speed of sound in this case is 340 m/s.

A) 22 $^{\circ}$
B) 18 $^{\circ}$
C) 17 $^{\circ}$
D) 46 $^{\circ}$
E) 4.3 $^{\circ}$

Correct Answer:

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