03 - Galileo (2 page) - AP Physics Laboratory Galileos...

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AP Physics Laboratory Galileo’s Inclined Plane Discussion: This experiment was devised by Galileo and refuted the Aristotelian thought of motion and at the same time demonstrated Galileo’s scientific m ethod. Because of his difficulty calculating the time of a free-falling body, Galileo chose to use an inclined plane. The force of gravity on the inc lined plane would be reduced, allowing more accurate calculations of time intervals. Upon his experimentation, he discovered that the distance tr aveled by the ball was directly proportional to the square of the time times the acceleration due to gravity when it was released from rest. As he tried his approach with inclined planes of different angles, he discovered that the acceleration changed. He asserted that as the angle of the inclined plane approached 90°, the acceleration approached our current value of g. Thus, he related acceleration due to gravity with the sin of the angle of the plane. a = g sin
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03 - Galileo (2 page) - AP Physics Laboratory Galileos...

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