A light rod with a small heavy ball attached to the top is placed on the floor and held in a vertical position. A small “stopper” is attached to the floor next to the bottom end of the rod. After the rod is released, it begins to “fall” down as shown. Find the angle that the ball’s velocity makes with the horizontal at the moment it strikes the floor.
Guidelines for contributors
We ask that all solutions, preferably in Word format, be submitted to the dedicated email address challenges@aapt.org. Each message will receive an automatic acknowledgment.
If your name is—for instance—Jerry Seinfeld, please name the file “Seinfeld21November” (do not include your first initial) when submitting the November 2021 solution.
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The deadline for submitting the solutions is the last day of...