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**1. The problem statement, all variables and given/known data**

Determine the error in the calculated centripetal force, F (dynamic), for each value of r from the estimated error in the quantities m, r, and from the standard deviation from the mean of your three measurements of f. Derive the equation for the error using Rule # 2 for the combination of errors.

Rule #2 = When you multiply or divide two or more measurements, you add the absolute value of the fractional or percentage errors to find the fractional or percentage error in the result.

**2. Relevant equations**

FD = 4pi(squared) m f(squared)r

**3. The attempt at a solution**

Δ FD = Δm/ m + Δ f/ f + Δr/ r

Am I on the right track???