I haven't answered a question in a while, and I'm certainly not an expert on this, however I'm pretty sure you just need a force greater than 9.8 Joules, since that is the force of gravity. So I think you have to multiply 36,000 by 9.8 and that should give you the overall force that gravity will have, then most likely anything above that. I'm sorry if this doesn't exactly help, I'm kind of confused when it comes to Physics
