Swinging the earth

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Introduction Did you know that playground swings can provide a good lesson in physics—as well as lots of fun? The back-and-forth motion of a swing is an example of a pendulum. We see pendulums in other areas of our lives as well, such as in grandfather also known as longcase clocks. But pendulums can do more than provide fun at recess and help tell the time—among other scientific applications, they can show that the earth is huge! This is because the swinging motion of a pendulum is due to the force of gravity generated by the earth's size.
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Foucault pendulum

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How Does the Foucault Pendulum Prove Earth's Rotation?

Astronomers getting their first close-up glimpse of a giant asteroid about to whiz by Earth found a surprise bonus rock. A smaller moon asteroid is circling the larger space rock, an unusual but not unheard of space phenomenon. The larger 1. Don't worry, though. It will still be 3. The smaller rock was discovered Wednesday night by astronomers using radar to look at QE2.
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The 10 Rules of Swinging

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Here, you can hold the ropes as you jump over the mouth of the cliff. On a clear day it is even possible to see the active volcano sitting just outside of the town, occasionally breathing out enough smoke to remind you of its existence. There are of these seismic stations in the world spread across 76 different countries. The treehouse itself was also originally built as a watch for the nearby active volcano, Tungurahua.

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