Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 5, Problem 4EP
Suppose that the initial height of the object were measured from the top of the object at the release point to the floor. How would this affect your experimental result for g, that is, would it be too high or too low? Is this a random or a systematic error? (See Experiment 2 on errors.)
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Let's say you have a plot for Pendulum experiment. Let's assume g for this experiment was measured (from the slope of the plot) to be 9.78 [ms-2.The vertical intercept, however, is 0.021 [s2].What might this translate to for a measurement of the length offset systematic in all the length measurements?Length Offset =
Solve the following problems: (NOTE: Use any reasonable DATA not given in the problem.)
surface, denoted by “g”. In this imaginary experiment, you have measured g three times. The values you obtain are:
g1 = 10.2 meters per second squared (m/s2)
g2 = 10.4 m/s2
g3 = 10.0 m/s2
To find the Average Value of g, denoted by gav, simple add up the
experimental values and divide by the number of experimental values you have:
g1 + g2 + g3 10.2 + 10.4 + 10
gav = __________ = ____________ = 10.2 m/s2 .
3 3
Percent Error (PE)
To find the Percent Error (PE), you compare the average experimental value to the standard or handbook value of the physical quantity you are measuring. The Standard Value of gravitational acceleration at Earth’s surface , gst, is 9.8 m/s2.
Mathematically, PE is defined as:
(Average - Standard)…
Chapter 5 Solutions
Physics Laboratory Experiments
Ch. 5 - What effect might the distance of fall have on...Ch. 5 - From the preceding calculation, it should be...Ch. 5 - Given three objects with same size and shape, but...Ch. 5 - Suppose that the initial height of the object were...Ch. 5 - How is the acceleration of a car traveling on an...Ch. 5 - Will the graph of instantaneous velocity versus...Ch. 5 - Objects of different mass were used to see whether...Ch. 5 - What is probably the greatest source of error in...Ch. 5 - What are the major sources of error in this...Ch. 5 - What would be the shapes of the curves for a graph...
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