I am a physics student. Recently we had a workshop in which we were asked a general knowledge question:- Does weight remain constant throughout the world?..I know the answer is related to "acceleration due to gravity, g", but i am not able to find the exact answer. Please help me
2006-12-07 20:24:45 · 8 answers · asked by Payal V 2 in Science & Mathematics ➔ Physics
only when the object gets bigger does the weight of something get heavier if it's not moving i don't weigh more in korea or iraq i have been to both places stepped on a scale in both places and i live in america however do you weigh the same in an air plane weight is caused by gravity pushing everything toward it's core but is there less gravity higher from the surface how about under water
2006-12-07 20:27:13 · answer #1 · answered by Talking Hat 6 · 0⤊ 3⤋
An object's weight is dependent on two things...
its mass (m) and the gravitational acceleration (g) it experiences.
Weight = mass * gravity
W = mg
In order for weight to change, either mass must change and/or the gravitational acceleration must change.
If we assume an object's mass is constant no matter where it is in the world, that leaves only the value of g.
Is the gravitational acceleration perfectly constant everywhere on Earth? No, not really. The value of g can vary depending on just where one is located and how far 'above' the Earth one is. On top of Mt. Everest the value of g is quite probably less than it is at the bottom of Death Valley. The changes in g are slight and do not effect us normally, but it is not perfectly constant, therefore, neither is an object's weight.
2006-12-07 20:34:32 · answer #2 · answered by mrjeffy321 7 · 0⤊ 0⤋
yes weight is different at different places. As weight is just the mass times acceleration due to gravity, it differs as the value of acceleration due to gravity differs. g is given by g= Gm/(r*r) ; r being the distance of the object from the centre of the earth. As earth is not a perfect sphere r is not same everywhere and hence the weight of an object differs from place to place. There is also some correction arising due to the rotation of the eath.
You can check Resnik and Haliday for more.
2006-12-07 20:33:07 · answer #3 · answered by d_astro 2 · 1⤊ 0⤋
Yes...weight differes from place to place...mass remains the same. Since the acceleartion due to gravity(g) varies on the earth the weight denoted by W=mg (where w is the weight and m is the mass of the body) also varies.
2006-12-07 20:38:04 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Formula for gravity F = (G m_earth / r² ) m_object = g m_object
There are two reasons why wait differs:
* the earth is not a perfect sphere
-> at the poles you are sligthly closer to the center of the earth so gravity is higher, g varies between 9.79 and 9.83 m/s²
* the mass of the earth is not centered in its core so the mass center of the earth is not necesseraly in its geometric center. (don't know the effect of this)
http://www.npl.co.uk/mass/faqs/gravity.html contains a formula to determine an approximation of g at an exact location on earth
2006-12-07 20:31:21 · answer #5 · answered by anton3s 3 · 1⤊ 0⤋
probably what got here about replaced into that upstairs a number of your weight replaced into transferred to the floor and made it sink, even as interior the basement the floor is sweet so all of your weight is centred on the size. also, the version is truly because gravity receives better as you get in the route of the middle of the earth (my first rationalization ought to probably make more advantageous of a huge difference, although).
2016-11-30 07:39:48 · answer #6 · answered by ? 4 · 0⤊ 0⤋
weight is the measure of the affect of gravity on a mass
so if gravity changes [go to the moon ],weight changes
mass[amount of mater in an object ]doesn't change with gravity
2006-12-08 10:05:10 · answer #7 · answered by the professor 2 · 0⤊ 0⤋
yes everything can have different weightsexcept me. i m 53.3 kg_53.6 kg like blood ph . restricted in this values
2006-12-07 20:27:16 · answer #8 · answered by exsoul 2 · 0⤊ 4⤋