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It remains feasible to ponder small objects without having any scientific scale, just through using coins plus some items lying around your home. All you need to generate a coin scale that yous very much further accurate than guesstimates is a ruler, some pencil, two 3-inch squares regarding cardboard, tape, and some loose adjust. Once the temporary coin scale has been properly assembled, you will be able to measure items down to near-gram weights.

Difficulty: Tolerably Easy

Directions

Things You'll Need

12-inch ruler Pencil

2 cardboard squares, 3 inches each Tape

Quarters, dimes, nickels, cents

1 Lay down the pencil on a table, along with either its point or eraser aimed without delay toward you. Some pencil with a round stem will make for the most accurate weighing together with the coin scale.

2 Place the center of the ruler (6-inch mark) onto the central of the pencil. The pencil should however be pointed direct in the direction you are facing. In that case tape a 3-inch cardboard square flat onto each end of the ruler. Make sure that is the cardboard pieces are centered directly previous to the ends of the ruler, so that is weight will be completely supported. For precision, operate the same cost of tape by each end about the ruler.

3 Place the item or substance to be weighed on one of the cardboard squares. Next pile coins on top of one another on the cardboard square at the opposite finish about the ruler, till each end of the ruler remains equally balanced. Quarters weigh 5.67 grams each, nickels are 2.268 grams, nickels weigh 5 grams, plus cents are 2.5 grams. Hold the end of the pencil closest to you, or tape every finish to the table, to retain it from moving whilst weighing the object or substance. For weighing any substance that's lighter than any single coin, skip this step and proceed to Step 5. Challenge Coins.

4 Add up the mass of the coins that create the balance. This yous the weight regarding the product on the other conclusion about the ruler. This yous how to operate this scale to ponder an object or substance that's heavier than a single coin.

5 Determine where on the ruler to place the coin that is estimated to be closest to the load of the substance you are trying to attain. Multiply the weight about the substance to be desired from six (the amount of inches on the substance's side), then divide that number through the weight of the coin. The number you occur out with will tell you the way far aside to proceed the coin from the center of the ruler (or fulcrum). If weighing out 4 grams of baking soda, your equation should look like this when using a dime: (4 g times 6 inches)/ 5g = 24/5= 4.8 inches.

6 Location the coin on the ruler's measurement that matches your solution to the equation. Generate definite to location it on the end opposite the substance being weighed outside. In the previous example, you would read 4.8 inches on the ruler and place the edge about the coin exactly that is distance away from the center. Most rulers obtain markers to divide inches into multiples of five or 1 website, which will allow you to be much more correct inside your placement of the coin.

References

Science Projects: Homemade Scales to Weighing Things