Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Introductory Physics Homework Help
Determining Best Value of k for Compound Pendulum
Reply to thread
Message
[QUOTE="kuruman, post: 6649840, member: 192687"] Each of the methods has its own measurement uncertainties that lead to uncertainties in the final answer which you can find by error propagation. Ideally, you should figure out each one separately and see if they overlap. For example, it looks like the value from method 1 is an outlier. You need to examine it carefully and see whether there something that you did (or didn't do) to minimize the uncertainty. The intercept of the graph depends greatly on the distance from the point of support to the CoM. How accurately did you determine where on the object the CoM is? How well did you measure its distance from the point of support? You should come up with a number, say ± 3 mm. Then you can do two additional calculations using method 1 with the higher and lower values. See if either one comes closer to the other values. You mention that you think that there were "problems" measuring the period. What kind of problems? Usually, one measures the time for a good number of oscillations, say 10-20, and divides the total time by that number. One also starts the clock as the pendulum goes through the vertical at maximum speed because at maximum angle there is greater uncertainty as to when exactly the pendulum is instantaneously at rest. This is just an example of what I mean when I say that you have to examine critically what you did with respect to introduction of uncertainties. Only you know what you did and didn't do so only you can figure that out. [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Introductory Physics Homework Help
Determining Best Value of k for Compound Pendulum
Back
Top