center of gravity question

[steveups]

i am working on science project with my 9 year old son.we tryed to balance 12 once can of coke full on its side and would not balance which we know why.Nexted,we emptyed it and tryed again with no luck.But if you put just the right amount of water in the can,you can get can to balance on its edge.not sure how to explain it to him or the teacher.I believe because you are changing the center of gravity but not sure if that is correct.Could please use some help.Thanks

[aaron.adley]

I'm not necessarily sure that I agree with your observation, that the object accelerates any faster. The acceleration of an object down a hill has nothing to do with its position on the hill. For instance, if the hill is at an angle of pi/4 from the horizon, the downward acceleration on that object will be g cos (pi/4). Notice that mass and position are not in play here.

[king angels]

I'm not necessarily sure that I agree with your observation, that the object accelerates any faster. The acceleration of an object down a hill has nothing to do with its position on the hill. For instance, if the hill is at an angle of pi/4 from the horizon, the downward acceleration on that object will be g cos (pi/4). Notice that mass and position are not in play here.

[woshimeinv]

Great content and very helpful thank and keep up the good work.

[Rickey Ponting]

The center of gravity is actually not stationary, it is controlled by the individual's patern of breathing... the center of gravity is actually at the stomach (breathing through the lower part of the lungs). The one difference between women and men is that women usually breathe through the stomach more often than men and men through the upper part of the lungs more often than women.

[Stone Cold]

You get a concrete drill and drill holes in the concrete depending upon how big the beam is, and then you put self expanding bolts in the holes and tighten them down. Makes a very strong conection providing that your concrete is good and strong.

[holo man]

Batter to post this question at wikianswers to get expert answer.