Because that first image looks like the world's largest pleasuring device.

In reality, it's one hump, one shot and then the gun needs some rest to reload.

Once.

But it would have to be a couple of hundred miles long to let a human survive the acceleration.

Accelerated to Mach 7 = 2.4 km/s over a barrel-length of (arbitrarily chosen) 100m.

velocity = sqrt(2*acceleration*length) -> acceleration = 28,800 m/s = 2936 g

I doubt that conventional electronics survive that. Or organic electronics. Or a hollow container with payload.

And to reach the orbit, a rocket needs about Mach 20!

you could just walk out the end and be in space. Maybe a ladder. Just having fun.

built on a east-west axis in a straight line.

the reason rockets go straight up is to get out of the dense lower atmosphere.

I do have a basic understanding of rockets and their need to go straight up when venturing towards space. Very basic. All of it is so interesting. I wasn't aware of how close space is considered to be. I like these threads that lead to a little morning reading and education.

I guess the weapon is for all those pirate ships we've been losing to lately.

Just finally been adapted for use by the military on a ship.

I've seen some small ones that are capable of accelerating a BB size pellet to above 1000 mph