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F = ma (11–17)
Simple Harmonic Motion
FMA-2023-16 · 2023 F = ma (AAPT)

2023 F = ma Exam — Question 16

A bead attached to a string of length ℓ = 10 m is released from a very small angle θ0 to the vertical. A wall is placed in the path of the bead such that the bead collides elastically with the wall when the string is at an angle θ0 /2 to the vertical, as shown. θ0 ℓ m What is the time interval between the bead’s collisions with the wall?
Source: Question 16, 2023 F = ma Exam, © 2023 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.