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## Homework Statement

How long would the day have to be in order that for a person standing at the equator of the earth would see a bathroom scale that she is standing on read zero?

This is all the info that is given.

## Homework Equations

Fc=m(v^2)/r

## The Attempt at a Solution

I setup my force equations so the sum of f=Fc=Fn-Fg. I then found out the radius of the earth, and this is where i got stuck , i know that the radius of the earth is 6377.34km, but how do i figure out v and m; if v has to be greater than earths current centripetal force?