system
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human
Would there be higher gravity if Earth didn't spin?

Does the Earth's spin cause an outwards centrifugal force. Theoretically if there was a planet with earth's mass that didn't spin or span slower would it have a higher gravity? I assume that if there is a difference its negligible though.
gpt
Yes, the apparent gravity and your apparent weight would be a little bit greater at the equator if the earth weren't spinning (I specify the equator because the effect is not felt at the poles).

As for how much, you can calculate the magnitude of the centrifugal force pretty straightforwardly. Earth surface gravity is about 9.8 m/s^(2), and if we want to compare to this we need a centrifugal acceleration with the same units. You get this from one length (the earth's radius) and one time (the earth's rotational period). All together, you get

    (6400 km)* (2*pi/1 day)^2 ~ 0.03 m/s^(2)

Put another way, that's a 0.3% change in apparent surface gravity if the earth were not rotating.