student2007

the confusion to me is that the teacher specifically said it has to be some type of button, not like a lever or something, so my main question is how could i use a "button"? one kid in my group said he could possibly make a crank which could possibly push down the cataplut and compress a spring and then another button could release it but we are not sure if we could get a strong enough motor because he normally deals with little stuff.

ok, i need to build some type of mechanism to launch and egg into a pool of water ( approximately 1meter in diameter ) for my physics class. we need to be able to launch the egg at least 15 meters. the pool will be set anywhere from 5 to 30 meters away ( this assignment seems to be more about being able to adjust the launcher ). egg must survive. the egg may be set in a container of some sort but the whole thing we are launching must not weight more then 400grams. problem comes in because my teacher is a nerd, he wants us to have some sort of a launching sequence. he says we need to be able to press one button to get the launcher ready to launch ( start a countdown as he says ) and another to trigger the launch. also, before u press the first button, the launcher must rest freely and have no potential energy ( springs must not be compressed ). i can think of numerous ways to do this but i cant think of a "launching sequence" that im sure will work. i would appreciate any insight on this and will be checking back on this thread regularly