- #1

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I have a quick question:

Using this equation I can calculate centripetal force:

F_c=4πmr/T^2

If I say m=0.100, r=0.60, 1/t^2=1.43

Then how do I calculate the errors for F_c.

Any help is some help.

Thanks

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- Thread starter Awsom Guy
- Start date

- #1

- 77

- 0

I have a quick question:

Using this equation I can calculate centripetal force:

F_c=4πmr/T^2

If I say m=0.100, r=0.60, 1/t^2=1.43

Then how do I calculate the errors for F_c.

Any help is some help.

Thanks

- #2

- 96

- 0

I have a quick question:

Using this equation I can calculate centripetal force:

F_c=4πmr/T^2

If I say m=0.100, r=0.60, 1/t^2=1.43

Then how do I calculate the errors for F_c.

Any help is some help.

Thanks

You need to do is error propagation. Wiki may be good place to look it up:

http://en.wikipedia.org/wiki/Propagation_of_uncertainty

- #3

- 5,601

- 40

To get extremes, you can plug in error variations for each variable that lead to an increase in your function, and alternatively, others that lead to a minimum of that function. By groups those extremes, you get an idea of the "accuracy" of your answer, the range of extreme variations.

Of course the chance (probability) that your errors will occur just that way is not as large as those errors occuring in a random way and partially cancelling....

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