Experiment 5 Pre-lab

# Experiment 5 Pre-lab - that the string between the pulley...

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Alec Rubenstein Experiment 5-Uniform Circular Motion Pre-Lab – 1, 3, 4, 6, 7 1. The acceleration of a rotating object is not zero for uniform circular motion because velocity is a vector term which means that it has a magnitude and direction. If either the magnitude or direction changes, then the object has an acceleration which is the change in velocity. Since the velocity changes as direction changes, the object in uniform circular motion has an acceleration not equal to zero. 3. The mass in the equation is the rotating mass. 4 The purpose of the static mass in this experiment is to adjust the UCM Apparatus for a known value of centripetal force. The static mass is used to adjust the clamp-on pulley so
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Unformatted text preview: that the string between the pulley and rotating mass is horizontal. 6. To find the empirical value of the rotating mass from the slope of the graph I would manipulate the magnitude of the net force equation to the axis for the graph ω 2 vs. F. Our new equation reads with the slope of the graph being so to calculate the rotational mass, multiply the slope by the measured radius, and then take the reciprocal of this value. 7. I expect the y-intercept to be zero for the graph because when the Force of the object is zero, the angular speed is also zero because any value multiplied by zero equals zero. =. Therefore the y-intercept has to be zero when x equals zero....
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## This note was uploaded on 11/27/2011 for the course PHYS 104 taught by Professor Pengyi during the Fall '08 term at UNC.

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