None. It does not need wheels. It always takes off vertically. There are some helicopters w/ wheels and they have about 3 wheels. No more than 5.
you put wheels on it
A very larg helicopter may be able to take off with an added 50,000 lbs. of weight. A good sized modern train is going to be significantly larger than this. The helicopter's blades would likely give out as they are suddenly reversed if you just "slammed on the brakes" so to speak. If you had the helicopter going at the same speed as the train, and slowled the helicopter down as much as possible, the train would eventually stop if the locomotives were not powering the wheels (it would stop without the helicopter, too, and would be infinitely safer for the helicopter pilot). If the locomotive is powering the wheels, the helicopter's not going to do a whole lot.
Different helicopters have different landing gear. some just have skids, some have 3 wheels, some have 4.
A ship, and a helicopter, I also want to point out to you that you spelled 'does' wrong.
For the USAF/USA, it depends on aircraft size/type, rotor disc diameter, whether or not the helicopter is equipped with wheels or skids. See AFH 32-1084 and/or UFC 3-260-01 for specifics.
Not much at all. The Apache is an attack helicopter, not a cargo mover.
5
Depends how big a helicopter.
it all depends on how big the helicopter is and what brand it is, if its just a cehap one from walmart it probably wouldn't lift much
He didn't have or build an actual helicopter. It was just a sketch.
The same force as the weight of the helicopter and its crew and cargo.
3,000,000 cents