A small marble is placed on the tee at the very top of the raised end. A few inches below it is a plastic cup. The wooden board is held up by a wooden ruler. The ruler is quickly removed, allowing the board and the marble to fall due to the force of gravity. The center of percussion of the board is the point that has the acceleration of a free falling particle along the path that it follows, all points beyond the center of percussion descend with accelerations greater than they would have if they were particles moving freely on their respective paths. This is due to the board rotating about a hinged end. Thus, the cup falls at a faster rate than the marble, and the marble lands in the cup.
(1Q20.50) Faster than Gravity
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A small marble is placed on the tee at the very top of the raised end. A few inches below it is a plastic cup. The wooden board is held up by a wooden ruler. The ruler is quickly removed, allowing the board and the marble to fall due to the force of gravity. The center of percussion of the board is the point that has the acceleration of a free falling particle along the path that it follows, all points beyond the center of percussion descend with accelerations greater than they would have if they were particles moving freely on their respective paths. This is due to the board rotating about a hinged end. Thus, the cup falls at a faster rate than the marble, and the marble lands in the cup.
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