mathematics - What's the fewest weights you need to balance any

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One arm of a weighing scale is twice as long as the other. Suppose you want to create a set of weights so that any object weight from 0.5 and its multiples up to 40 pounds can be exactly balanced

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Can You Really Solve This Tricky Math Puzzle?, by Hemanth, Street Science

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Aircraft Weight and Balance (The Essential Need-To-Knows)

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3 Ways to Find the Weight of an Object Without a Scale - wikiHow

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Measurement for Kids: How to Compare Weights with a Balance Scale

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Determining Aircraft Weight, Glenn Research Center

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What is the minimum number of weighings you need to determine using a beam balance with two pans which of 6 coins of distinct weights is second to the lightest? - Quora

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Math: Measurement--Weight - Kindergarten Kindergarten

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How to Solve the Weighing Scale Puzzle, by Hein de Haan, How to Build an ASI

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Puzzles – 7

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edxeducation Student Math Balance - In Home Learning Manipulative for Early Math and Number Concepts - Includes 20 Weights - Beginner Addition, Subtraction and Equations : Toys & Games

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Math This week we had so much fun with estimation for length, surface area, and weight. We loved using our balance scale and did a great job on our measurement. - ppt