Physics215Lab2 - Introduction The acceleration caused by gravity near the Earths surface is constant and has a value of 9.80 m\/s2 or 980 cm\/s2 In the

Physics215Lab2 - Introduction The acceleration caused by...

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Introduction: The acceleration caused by gravity near the Earth’s surface is constant and has a value of 9.80 m/s2 or 980 cm/s2. In the experiment the value of g was determined by putting the collected data to the best-fit straight line and the slope was then found. The free-fall equation is: y= y0 – voyt – ½ gt2 In the equation y is the height, y0 is the initial height above the landing area, v0y is the initial velocity, g is the magnitude of the gravitational acceleration, and t is the time. In the experiment a metal ball was released from resting position. The initial velocity is zero due to the ball starting from rest. With initial height at y0 = h and the target at y = 0, the time to hit the target was found from: 0 = h – ½ gt2 or h = ½ gt2 Experimental Details: The apparatus was set up in a way that once the ball was released; it would directly land above the landing pad. The thumbscrew was loosened and the dowel pin pressed against the
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release plate to hold the steel ball in position. The thumbscrew was then tightened to keep the dowel pin from slipping. The photo-gate timer was connected to the free fall apparatus. The time of flight for the four different heights, 100 cm, 125 cm, 150 cm, 190 cm, were measured. The
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