I encourage everyone to try and solve this instead of just guessing. (its more fun/rewarding that way)
I tried a few quick equations (by no means correct) and came up with my guesses. Highlight line below to see.
Either a scissor jack (more likely) that grabs the top bar, or a 0.5 metre rotational arm that attaches to a vertical bar on the tower.
Additional assumptions I made:
The robot is lifted from Center of Gravity
5 seconds is just lift time (does not include time to raise mechanism)
Wouldn't use a winch with a 0.4 metre radius
