Comment There are some serious issues to overcome here (Score 4, Insightful) 200
I have to wonder if this is actually a joke - I can think of three issues right off the bat which seems to me that would make this concept impractical:
1. Where does the horizontal velocity for orbit come from? Rockets only go straight up for a few seconds and then they tip over and start accelerating parallel to the ground to get orbital velocity. Check out Newton's diagram of a cannon on a mountain.
2. The G-forces on the payload are going to be enormous. In a normal SpaceX launch they're experiencing around 5g, I would imagine that in the centrifuge they'll be experiencing hundreds at least. Along with that, once they leave the vacuum of the centrifuge, they're going to be slamming into the atmosphere which is going to subjecting the payloads to heavy G-forces in another dimension.
3. They're going to need significant heat shielding for launch. Again, slamming into the atmosphere from the launcher at a minimum 25,000 kph (orbital velocity) is gonna generate a lot of heat.
If they do manage to secure $110M in funding, I'd love to see the presentations that they give to investors - they could probably double it by doing seminars to entrepreneurs in how to get fleece investors.