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

question 10

Multiple Choice

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\(^{\circ}\)

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