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F = ma (First 10)
Simple Harmonic Motion
FMA-2020A-04 · 2020A F = ma (AAPT)

2020 F = ma Exam A — Question 4

Four identical rods, each of mass m and length 2d, are joined together to form a square. The square is then spun around its center, as shown in the figure, at an angular frequency of ω. What is the magnitude of the force that the joints between the rods (at the corners of the square) must bear? ω
Source: Question 4, 2020 F = ma Exam A, © 2020 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.