science teacher needs help
- From: "semidemiurge" <rick.fetters@xxxxxxxxx>
- Date: 19 Oct 2005 21:15:31 -0700
I need a simple solution for a classroom science project. I am a
science teacher and I am constructing apparatus to demonstrate that a
projectile drops at the same rate as an object falling in the vertical
axis alone.
I have the target released by energizing a solenoid, this is suppose to
happen when the projectile exits the muzzle of a blowgun. My problem
is how to energize the solenoid by the passage of the dart out the
muzzle. One thought was using a NO microswitch but it causes a
deflection in the path of the dart no mater what I do. I was thinking
about using a small piece of alluminum foil that would be severed
(breaking contact) but I would need some technique/circuit that would
start the current flow to the solenoid when the foil circuit was
openned. I don't have a suffecient background in electronics to solve
this on my own, any suggestions? thanks rick
.
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