How many times do you weigh in a day? If you are on a diet, you may want to stand on the weighing scale every morning to check your progress. If you are eating breakfast, you can put cereal in a bowl and then consider what to eat. If you want to send a letter or package, you may take it to the post office for weighing. When you buy an item in a grocery store, the price you pay for most items depends on their weight. In some countries, even the money in your pocket is based on the weight system. Accurate weighing methods are very important because most of our world is driven by weight. But what is weight, and how do you measure it? Let's take a closer look!
Here is the content list:
Weight and mass
How can I weigh?
The working principle of the weighing scale
Mass is the amount of matter that makes up something. Larger ones are usually heavier than smaller ones. If you have a weighing scale and you take it to different parts of the earth and weigh it, you will always get the same result.
Weight is a measure of how gravity affects a specific mass. Gravity changes slightly across the globe, so iron has the same mass but a different weight. Where's the moon? Like the earth, gravity is about one-sixth the strength of the moon. Therefore, even if the masses of the two places are the same, the weight of the moon is only one-sixth of the weight of the earth. Why are things so heavy on earth? In essence, the earth is much heavier than the moon. It attracts objects with greater force and gives them greater weight.
The old-fashioned bread balance means to balance two pieces of bread of known weight with one bread and balance the items you want to weigh with the other bread. On a slightly different weighing scale, the pot is hung on one end of a metal arm, and the weight moves along the other end like a seesaw until it finds a point of balance. The steel mill was invented in Roman times, but it is still in use today. Doctors and nurses still use them to weigh babies.
Many chefs use weighing scales instead of bread balance and weight. Place the item to be weighed on the top of the mobile platform, push down to stretch or compress the internal spring, and rotate the pointer around the dial.
A weighing scale measures the weight of something. The weighing scale measures the force existing between the weighing object and the earth. Weighing scales measure force, but can measure mass, such as kilograms, grams, and pounds. This may be a bit confusing, but it is acceptable because weight and mass (as described above) are linked simply and are often used interchangeably in daily life.
Suppose you have some simple kitchen weighing scales like this one. I was very interested. When I removed the hands and dial, I saw a mechanism lurking inside. When you load the pot, the platform hidden in the scale slides down and a powerful spring stretches out. The heavier the object, the more gravity pulls it downward, and the more the spring stretches.
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