Run Fastest to Weigh Most at Equator!

[Johny158]

Homework Statement

What speed you have to run on the equator to weigh as much as possible (the greatest weight) if you do
choose the right direction? Do not consider relativity.

Homework Equations

ravitational acceleration is 9.78 m/s2 at the equator and 9.83 m/s2 at the poles, so you weigh about 0.5% more at the poles than at the equator.

The Attempt at a Solution

Absolutely don't know :D

 

[CWatters]

ravitational acceleration is 9.78 m/s2 at the equator and 9.83 m/s2 at the poles, so you weigh about 0.5% more at the poles than at the equator.

That's not really relevant to this question. This isn't about the difference between the poles and equator.

Sorry I should correct my initial reply. Gravitational force is actually about the same at the equator and the poles. The net force acting on you is different at the equator and poles.

Hint: It's about an effect that occurs at all latitudes except the poles and how you could reduce this effect?

Hintt 2: The Earth isn't a perfect sphere. Why?

 

[haruspex]

Gravitational force is actually about the same at the equator and the poles.

Well, it is about 0.2% less at the equator, but as you say the apparent gravitational force (the ratio between weight and mass) is about 0.5% less.