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Who measured the weight of the Earth?

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βˆ™ 2007-07-04 05:53:53

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The measurement of the planet's weight is derived from the gravitational attraction that the Earth has for objects near it.
To make their measurements, the researchers are using a device called a torsion balance. This records nearly imperceptible accelerations from the gravitational effects of four eight-kilogram stainless steel balls on a gold-coated Pyrex plate about the size of a matchbox but just 1.5 millimetres thick. The device, operating inside an old cyclotron hall in the UW nuclear physics laboratory, is similar to one used 200 years ago to make the first measurement. But it is computer controlled and contains numerous mechanical refinements that make the more precise measurement possible. Hope this helps!

2007-07-04 05:53:53
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The force F is measured in newtons. The mass is measured in kilograms. Weight is usually measured on Earth, where 1 newton is nearly 0.102 kilogram.


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Can you Compare the changes in the weight of a ball with the changes in the ball's mass as the height of the ball above Earth's surface increases?

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How is weight measured?

It is measured by a spring scale.