Verified answer

A lot of answers here are kinda correct, but make some simplifying assumptions. It turns out that because of the concentration of mass, mountaintops actually have slightly stronger gravity. But not all mountaintops have higher gravity, it's pretty complicated.

http://apod.nasa.gov/apod/ap030723.html shows a gravity map of the Earth. If you're on a mountaintop in a red area, you weigh more. If you're on a mountaintop in a blue area, you weigh less. :)

I asked my teacher and yes the FORCE of gravity is less. Most of you guys think that gravity should be the same everywhere. What you are referring to is the GRAVITATIONAL FIELD STRENGTH of the earth which is always the same.

Kepler's Laws state that gravity works by the attraction of 2 objects. You also attract the earth but since the earth's acceleration to you is miniscule you are accelerated faster to earth via. F=ma. Kepler's law relates the mass of two objects M and m with distance r and the gravitational constant G;

F = GMm

_____

...2

r

As you are further from the centre of the earth your weight is less. Studies have shown a person to weigh less on the equator than on the poles as the earth is actually squished in the poles and further from the earths centre along the equator.

Hope this helps !

p.s. the dots are to make the equation; r squared so ignore the dots

Gravity will be slightly weaker on top of the mountain because you are further from the centre of the Earth than at sea level. Your weight (NOTE: not mass!) will be less. The difference will be small but possibly noticeable.

Underground, your weight will be greater as there is a greater effect from gravity. This is because you are closer to the Earth.

Effect of Rotation.

The force of gravity for objects on the earth's surface is lessened by the centrifugal force caused by the earth's rotation, which tends to counteract the gravitational effect. Similarly, the acceleration of gravity is greater at the poles than at the equator, as the centrifugal force is largest at the equator and zero at the poles. The force of gravity decreases slightly with an increase in distance from the center of the earth, as, for example, on top of a mountain.

Yes it does.

On the top of a mountain the gravity is weaker (by only a small amount) than at sea level, so the force of gravity on you (which is technically your weight) will be slightly less. Your MASS on the other hand will be the same - except that as you use up food to keep warm and walk etc: you slowly lose mass, but it doesn't affect the basic argument.

no the gravitational pull is the same everywhere within earths atmosphere (9.8m/s^2) so your weight will remain the same.

You will recieve a 'fake' weight reading from scales when ascending or decending but when your weight is always mg (m being mas and g being the gravitation pull per KG)

Seen as the gravitation pull and your mas remain equal anywhere on earth your weight would remain the same

[NOTICE]

Technically the above answer is wrong:-

the gravitation pull will change slightly though so little that you wont notice a change (it will be around 0.1 of a pound)

B) continues to be a similar, gravitational stress is comparatively consistent close to the exterior of the earth. Drag (or air resistance) is led to by the friction of air debris upon a falling merchandise.

Your mass is always the same. your weight DOES change. weight is a force obtained by multiplying mass by acceleration of gravity. that acceleration is always greater at the center of any objects mass. so yes, you weigh less.

not really.. actually only being on top of mountain will not decrese your weight in the same way if you are in underground it will not decrese.. only in space ..as per my knowledge if gravity is not their means you feel it is less..

yes your weight may increase because of gravitational pull but your mass doesn't