Does a person weigh the same at all places on our planet?

No!

Although the pull of gravity is the same everywhere, you have varying degrees of centrifugal force acting on you. This force is zero at the poles and greatest at the equator (where you are spinning with the earth at ~1000MPH.

You would weigh slightly less at the equator.

Many people argue that we must be the only life in the universe, because there is no evidence that an artificial source of energy transmission exists beyond our planet or our probes. But, there are a couple of things people should consider about our search for extraterrestrial intelligence (SETI). First is that the SETI radio telescopes are able to scan a very small portion of the sky and we may simply be looking in the wrong direction. Second is that our timing may be wrong. The first SETI experiments began in 1960. So, it's possible that extraterrestrials had been attempting to contact prior to 1960, and we simply weren't listening for their signal. Or, they have already sent out their transmissions. But, they're so far away that they won't get here until after man is long gone from existence. The rest of the universe is not on our time schedule. Extraterrestrials may have existed billions of years ago, before our solar system was even developed. Or, they may not exist for billions of years from now, long after our sun has died.

Sailor Astra has the right of it. And there's one other factor: Since the gravitational acceleration of the planet 'acts' as if all of the planets mass is concentrated in one location (called, cleverly enough, the 'center of mass') and since gravitational acceleration varies inversly with the square of the distance from the center of mass, you' actually weigh a tiny bit less if you are on a hilltop than if you are at sea level. Add that to the fact that the Earth is not a perfect sphere (it's actually kind of 'pear shaped') and the answer to the question is no, your weight changes slightly (a few hundred parts per million) depending on exactly where you are.

Doug

No. A person's weight will vary due to minute gravitational variations on the Earth's surface. The spot he might be standing on may have denser material (more mass) than material at another location, causing him to weigh more in the first spot. (Geologists actually use this to their advantage by measuring the variances in gravity at different locations to help them find mineral deposits, notably oil).

Gravity also diminishes with distance, so on a mountain he will weight less than at sea level.

By the way, that site wasn't quite correct. Grams (g) is a measure of mass, not weight. Newtons (kg*m/s or N) would have been the appropriate measure of weight.

In a practical sense the answer is yes - but in actual fact, if you measure very very accurately the answer is no. Depending on the mass near you or over you, your weight changes.

For example if the moon is directly overhead you will 'weigh' less than if the moon is off to your side.

Similarly standing 'under' a large steep mountainside will reduce your weight.

Alternatively standing near and over a massive deposit of some heavy mineral will cause your weight to increase.

However, a standard bathroom scales is unlikely to register much difference. The difference is often small.

weight is essentially the force exerted by the persons body. force is the product of mass and acceleration, the mass of a body is constant at all places. but there can differecne in acceleration due to gravity or gravity at different places on earth. gravity being max. on the equator , a person standing on equator would weigh slightly more than that he would weigh at the poles.

No. In general, you weigh slightly less at the equator than at the poles, and slightly less on top of mountains than at sea level. However, for most purposes the differences are too small to be noticeable.

Your weight on earth depends on your distance from the center.

From the top of a mountain it would be less and at the bottom of a deep mine shaft it would also be less due to the mass and gravity of the matter between you and the surface.

on our planet... Earth... its more or less the same.. only slight difference of about 0.5%

weight is nothing but the force by which it attracts towrds the center of earth, given by W=mg where m is mass and g gravitational constant 9.81m/s*s

the same weight will defnitely be different from planet to planet as the gravitaional constant changes.

checkout the link... it'l be useful

no