i dont think they would allow us to jump ONLY 1.5 feet if the bar is about 10 feet high and there is a restriction on the hight (60 inch) as usual..
what i suppose they mean -with regards to relative velocity is that we should use our robot base as the reference point though this would only affect the horizontal and not the vertical velocity of whatever it i being shot up(unless the robot is jumping up and down...
)
i think we're going to try and go about it with a spring.. use the energy conservation concept to make sure that the
release velocity is not going to be over 10 ft/s which is quite reasonable since its about 2.5-3.0 m/s
and we have to account basicaly only gravity and the tension created by the wire or cable(that will be used to pull it up) to analyze the 2 dimenional projectile motion of the hook/grabber
"simple, but not ordinary"
Mr Keeting - "Dead Poets Society"