Nother physics question

[TOTO]

Oh dear. Draw the vector diagram. Exact values are not required because on the surface of the earth there is no upwards attraction vector. Yes there are some almost sidewards ones that cancel each other out. As you get deeper the integral of all vectors reduces as the strength of the upwards increases. Again all sidewards cancel out.

where can I download the subtitles for this movie ?

[LBD]

I go for answer D.

If the earth centre core is a magnet, up high at the mountain , it is further from the magnet, thereofre less gravitational pull, and down the shaft it is closer to the magnet, hence scale will read a heavier weight.

did I win the $100 000 or I have to go get married in the nude ?

When do the wedding invites go out and do I get one?

Fail. In the mineshaft gravity will also act sideways, not just up or down. Also thread/question fail IMHO. please set some proper paramaters for the question. Ie. what to regard/disregard, how high, how deep etc. Let's not do kindy-physics. Some considerations change the outcome.

No considerations change the out come any consequence....The answer is simple and logical. ..

Kindy physics....like the concept, lets see who can think clearly on a cloudy day... and graduate from kindy as you put it.

[YellowDog]

Isn't this related to that Archemidies fellow and his 'upthrust' pv constant?

1971 sounds about right.

[Usarka]

What if the mineshaft was sooo deep that you ended up weighing the water exactly in the center of the earth.....?

[Fatt Max]

Erm, sorry having trouble with this....

Got the first bit, no problems, but I am having trouble getting up the mountain....you see there is an elephant in the way...erm.....

[davebullet]

e) both heavier and lighter. Heavier once I've drunken the 10L of water, then lighter as I stop riding to get petrol and go for a pee.

[rainman]

What if the mineshaft was sooo deep that you ended up weighing the water exactly in the center of the earth.....?

Well, then it'd be steam... but so would you, so the answer is irrelevant!

[Usarka]

If you climbed the mountain the lower air pressure would cause the water to expand, leaking out of your exactly 10l container.

[Bass]

Oh dear. Draw the vector diagram. Exact values are not required because on the surface of the earth there is no upwards attraction vector. Yes there are some almost sidewards ones that cancel each other out. As you get deeper the integral of all vectors reduces as the strength of the upwards increases. Again all sidewards cancel out.

Exactly right

[MisterD]

If you climbed the mountain the lower air pressure would cause the water to expand, leaking out of your exactly 10l container.

The lateral thinking prize goes to...

Jantar has the correct answer, as long as we're assuming uniform density for the earth and the mountain. In reality the core of the Earth is more dense than the crust so depending on the way the density varies with depth the weight could increase or decrease.

Gravitational anomalies are one of the main methods of "looking" at the structure of rocks under our feet...I spent a memorable few months hooning around Northumbria trying to work out the size of an area of granite back in the day. Ok mainly memorable because of the pubs and the fact that a 1.6L Cavalier estate will get airborne...

[TOTO]

When do the wedding invites go out and do I get one?

NZ_CBR has the ivites to the wedding ...

[bogan]

a question about these scales. Do they operate with the old spring way, or a fandangled sealed pressure transducery setup. For example when the air pressure is greater or lesser do they add that to thereading? I assumed they did, but now im not so sure.

[Metalor]

Yep. It was one of the first discussions we had in year 1 physics back in 1971.

First; the mountain: Because it is a mountain it is steep, and the circumference of the base can never be greater than the circumference of the earth. The center of mass of the entire system cannot be more than 1/8 (volume of a cone) of the distance from the present center of the earth to the top of the mountain, so the water is significantly further away from the center of mass and the gravitional effect is reduced.

In the mineshaft there is mass above which is pulling upwards, and at the center of the earth all gravitational effects are balanced.

You have to get VERY far away from the earth for a noticable change in earths gravity (think GPS satellites running in fast time due to reduced gravity).

No mountain, for 'all intended purposes' is going to EVER be large enough. Unless you have an EXTREMELY precise scale... fucken nanokilo shit there motherfucker!

[Marmoot]

Don't forget that up the high mountain and down the deep mineshaft would have an effect on temperature. Temperature affects the weight.

So to determine whether the weight measured by the scale would be lighter or heavier, you need to first construct a mathematical model that incorporates the temperature effect as well as the gravity effect. Only after that would you be able to determine the total effect gained at each location and determine the correct answer.

Without knowing the actual height/depth of the place (in above-sea-level terms), I don't think you can form a conclusive answer.

[Big Dave]

It's still D.

It would be lighter at the top of the mountain because you'd spill some climbing it and also need a drink.

It would be heavier in the mine shaft because of the gold.