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 3EP
Given three objects with same size and shape, but different masses are dropped simultaneously from a high altitude hot-air balloon. Would the heaviest fall the fastest? If so, would this mean that the acceleration due to gravity depends on mass? Or could there be another factor involved? (Hint: Take a look at the opening sentence of this experimental planning.)
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Assuming we take several trials where the total mass ?1+?2 is constant, but we redistribute themasses between ?1 and ?2. The equation you derived as your answer to the Problem (2) would apply.
(a) Assume that we took these trials and plottedthe difference in the weights,??−??, on the ?-axis and the accelerationon the ?-axis. What would be the theoretical value–that is, in terms of other known quantities –of the slope?(Once again, you can think of this in terms of your equation answer to the previous problem.
(b) For the same plot, what would be the theoretical value of the intercept?
(c)Now consider if there were another constant force in the equation, such as friction. What would the theoretical value of the interceptbe in this case? (justify)
(1) From the slope, determine gravitational acceleration g. How is slope related to gravity g. HINT: Write the kinematic equation that you plot and compare it to the equation of a line y=m x where m is slope.
measured g (from slope) = _______________ write unit:
(2) Calculate the percentage error with respect to the standard value of 9.80 m/s2
percentage error = |g (from slope)-9.80| x 100 / 9.80=
a. Was the experiment accurate? YES NO Briefly explain your reasoning.
b. Was the experiment precise? YES NO Briefly explain your reasoning.
I was able to understand the attached problem and have the answer now for mu. So the equation I have is
v=150e-6.0788 x
My question, then, is how do we find the TIME to slow the sled to 15 mi/hr ? The answer is supposed to be 35.533 seconds, but I don't know how to get that. Thanks!
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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