[lollypop]

Whatever the answer, this is really good news.

[ttiokjbnhjjillp]

According to physicsforums it is around 0.3% (1/290). The equation that determines it is here:




Ari, I don't know why you say it should be heavier. Centripetal acceleration increases weight (or rather increases the force a mass applies to the ground), not decreases.

[zenihan]

Originally posted by Lorizael


What, that I have a friend?



Nah, because I'm heading to the tropics and could afford to lose a little weight.

[Guaranano]

No, because if the earth stopped rotating you'd lose reported weight, not gain it, shouldn't you?

edit: Or are you saying that actual weight is what you weigh with the earth rotating?? Also, weight, not mass...

[lisualsethelp]

Mass = grams
weight = pounds or newtons

Pounds are used by the english system to measure mass, only because they did not differentiate between the two when it was invented.

In any event, mass does not change with gravity, or acceleration, or anything else ... mass is mass. Weight, or "the force applied by a body at rest on the earth or a proxy thereof", does change.

On the other hand, you're right, I just was thinking backwards

[PheliarearY]

IANAP, but the way I understand it is that your (perceived) weight is affected slightly because some small portion of the force of gravity is redirected to keeping you on the earth (as explained above by Ari) instead of flying off; so instead of directly down, the line of the force of gravity goes just slightly diagonal - enough to lose 0.3% or so of its downforce.

[Heliosprime]

isn't centripetal acceleration = v^2/r? Your being thrown off by the spinning, so your weight goes down by F=ma.

[HenriRow]

In other words, grav acceleration is 9.8m/s, centripetal acceleration is v^2/r(which would come out as negative by defining grav acceleration as positive). So your weight is equal to F=weight=M(9.8m/s-(v^2/r)).

[CFstantony]

Originally posted by Asher
Where's KrazyHorse and GP? Don't know about GP, but KH is gone until October 17th. Wonder if I can keep the thread going that long.

[forextradinginfo]

Best thread ever, or bestest thread evar?