[Kenichi]

The best way i've found to get the mentos into the bottle is to take a test tube, load it up with about 10 mentos or so (however many will fit) and then put a piece of paper/card over top of it.  Flip the tube over so the card rests between the mentos and the open top of the bottle.  When you are ready, yank the paper from underneath the mentos and let them drop in.  When you do this make sure the tube is lined up with the hole. It gets rather messy otherwise.  Back away fast once you dump the mentos in.  It's pretty.

[syko sykes]

you have to be quick, but it is cool. trust me.

i did this experiment for school and capping the bottle does make it much more exciting. i just wouldn't suggest wearing nice clothing. i think we achieved a blast radius of about 16 feet using this method.

[rctrackstar2007]

ya i got 15 feet , at best guess, when i did mine

the best is when you get the entire roll in a bottle that's never been shaken, it's a must see

i would still like to try the pulling of the card idea only fling the bottle high in the air to see it burst in the air.

a good thing to try might be to turn it upside down on a slant and see if you can turn it into a rocket somehow

if someone has tried it let me know how that worked out for you

[syko sykes]

a good thing to try might be to turn it upside down on a slant and see if you can turn it into a rocket somehow

that would be pretty sweet but it would be extremely hard to do because you have gravity working against you the whole way so even if you got the mentos in the bottle without losing to much soda they would fall out as soon as the rocket began to take flight

[mrdeadman]

i did this experiment for school and capping the bottle does make it much more exciting. i just wouldn't suggest wearing nice clothing. i think we achieved a blast radius of about 16 feet using this method.

i thought it was 16 feet high and a 20-something radius.

[rctrackstar2007]

either way you achieved some kind of 16 foot thing

and yes the gravity would be very difficult to overcome but oh so fulfilling if it were to work successfully

if anyone reads more than one topic, this could also be another way to replace the gasoline engine hahahahahahahaha or not

[tennis freak]

they wouldn't fall out if the bottle was horizontal and you only launched it that way in hopes of hitting someone

[rctrackstar2007]

they wouldn't fall out if the bottle was horizontal and you only launched it that way in hopes of hitting someone

hahaha i like the way you think

[rctrackstar2007]

does anyone have any ideas on how to make a scale to turn upside down and try the experiment to see exactly how much force gets exerted on the ground during a possible rocket launch of the bottle??

i'd really like to test my idea out

[mrdeadman]

stand over it, and when it launches, let it hit you in the face, the size of the bruise is directly proportional to the amount of force of liftoff, don't forget the blackeye and bloody nose constants. shown by this function here: F=ENB^3 where F is force, E is the eye constant, N is the nose constant and B is the area of the bruised part of the face. remember, this function only applies when it is referring to the face, if it hits you in the chest, you have to use a different formula to calculate F.

[rctrackstar2007]

stand over it, and when it launches, let it hit you in the face, the size of the bruise is directly proportional to the amount of force of liftoff, don't forget the blackeye and bloody nose constants. shown by this function here: F=ENB^3 where F is force, E is the eye constant, N is the nose constant and B is the area of the bruised part of the face. remember, this function only applies when it is referring to the face, if it hits you in the chest, you have to use a different formula to calculate F.

Stand under it mrdeadman and you yourself can calculate using this formula:

F=(V)²(D)/(B)

F is force, V is total volume of swelling of groin region, D is distance bottle travels up the  , B is pints of blood collected from entire region.

[mrdeadman]

Stand under it mrdeadman and you yourself can calculate using this formula:
F=(V)²(D)/(B)
F is force, V is total volume of swelling of groin region, D is distance bottle travels up the  , B is pints of blood collected from entire region.

so based on your proposal, the more blood i lose, the smaller the force?

[rctrackstar2007]

oops didn't mean to put the / in there

it is all a directly proportional relationship

but it is still only B¹

[syko sykes]

does anyone have any ideas on how to make a scale to turn upside down and try the experiment to see exactly how much force gets exerted on the ground during a possible rocket launch of the bottle??

i'd really like to test my idea out

while the 2 equations you offered were rather genius, i'd like to propose something on a more serious note. Somehow I don't think we would get many volunteers for the face bruising or groin bleeding trials.

Use the good old F=MA equation. M would be the mass of the coke that shoots out (tonic water might actually work better) and A, acceleration, could be calculated based on the height the coke shoots up and the gravitational force acting on it.

Another way would be to place objects of varying weights on top of the bottle immediately after filling it with mentos. If it lifts the object then you know it produces at least that much force. I'm sure it would produce enough force to at least lift itself using your rocket idea.

[mike]

Why does the scale need to be upside down? Why not just use it the right way up?