wrote:
On Thu, 20 Jun 2013 19:28:24 -0700 (PDT),
wrote:

How fast would the earth have to spin, so that stuff
started flying off?


I have a question. How much would a 200 pound person weigh if the
earth did not spin

A 200-lb polar explorer at 90 deg latitude would weigh the same whether or
not the Earth was spinning.

At the equator the weight (measured by a spring scale) would be 0.68 kg less
than at the pole, with the Earth's current rate of spin. But the person's
mass would still be the same.

--
Mike Dworetsky

(Remove pants sp*mbl*ck to reply)