It's my belief that if some one was at the equator or the south pole there weight might be differernt(adsbygoogle = window.adsbygoogle || []).push({});

Sum of F = m a = mg- N

a = v^2/r

at the pole the distance from person to rotational axis is 0 so a= 0 and then mg = N

On the equator the velocity can be calculated from 24 hours to go 2pi R and the normal is a little less there.

However a problem that does confuse is if we had a pendelum on a string what angles it would make depending on what degree from the horizontal it is at. What angle does the pendulem make with line going to the center of the earth assuming the earth is spherical and it is not moving relative to the stuff around it?

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# Homework Help: Earths Centripetal Acceleration Effects

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