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Tomorrow The Earth Will Spin Faster Than Normal Making The Day 1.30 Milliseconds Shorter
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this post was submitted on 09 Jul 2025
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I wonder if you could tell by measuring g today
Yes. Yes, you could.
I mean, I know you theoretically could, but would it be a "noticeable" difference? Like to the second or third decimal?
If my math is right...it will have an effect of approximately 0.0000000001 g
Angular acceleration is r*w^2, so for a normal day that would be 6371000*(2*pi/86400)^2/g = 0.0034345580g
On this accelerated day, it becomes 6371000*(2*pi/86399.9987)^2/g = 0.0034345581g
That's at the equator assuming a radius of 6371 km, which is a decent ballpark, the specific number won't change the result much.