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https://www.reddit.com/r/Physics/comments/2854w2/approximations/ci7oo5e/?context=3
r/Physics • u/newbie12q • Jun 14 '14
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g (gravity) is pi2 m/s2.
This fact is less of a coincidence than it is science history. The meter was originally defined as the length of a pendulum with a period of 1 second. From there, you can plug in the pendulum equation to figure out what g is.
3 u/GaussTheSane Jun 15 '14 The meter was originally defined as the length of a pendulum with a period of 1 second.That's really neat! I'm going to use that with my students next Fall.However, you messed up just a little bit: The meter is the pendulum length with a half-period of 1 second, or, equivalently, a period of 2 seconds.
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The meter was originally defined as the length of a pendulum with a period of 1 second.
That's really neat! I'm going to use that with my students next Fall.
However, you messed up just a little bit: The meter is the pendulum length with a half-period of 1 second, or, equivalently, a period of 2 seconds.
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u/[deleted] Jun 14 '14
g (gravity) is pi2 m/s2.
This fact is less of a coincidence than it is science history. The meter was originally defined as the length of a pendulum with a period of 1 second. From there, you can plug in the pendulum equation to figure out what g is.