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Doc Al

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While the pure number [itex]\pi[/itex] might be irrational and "neverending" (which is why we represent it by a symbol), your calculation of the speed will not be a pure number. You have to roundoff your final answer to a reasonable number of significant figures. (Based on the accuracy of your values for time and distance.)rkrk said:However, no matter what the distance is, when ever doing any operation involving pi you will end up with an irrational number. How are you supposed to write a neverending number in scientific notation?

Just what you thought it meant when you produced your formula for tangential speed. The moon travels in a circle around the earth's center; you are given the radius of that circle, I presume.Also what exactly does it mean by radius of rotation?

Nothing wrong with your formula.Am I doing anything wrong or is my formula for tangential speed incorrent?

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HallsofIvy

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The moon does not travel in a circle around the earth's center.Doc Al said:The moon travels in a circle around the earth's center; you are given the radius of that circle, I presume.

Nothing wrong with your formula.

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Doc Al

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True, but close enough for this problem.MeJennifer said:The moon does not travel in a circle around the earth's center.

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