1. The problem statement, all variables and given/known data I want o make a programmable electric/electronic 4 seated teeter toter(sp?) Instead of being manually operated using weight to push one end down, and drive to other up, I want to electronically push UP one end-thus driving the other down (my electronics knowledge has accumulated way too much duist!) 2. Relevant equations none at this point 3. The attempt at a solution I've determined so far, to do this, I'd need some type of linear motor-but not sure how to dertermine much beyond that. Thanks! Your help is appreciated!