Science

How hard would it be to kinetically launch mass to escape velocity without it burning up in the atmosphere? 

If we built an electromagnetic launch rail atop Mount Everest on 1 kilometer-tall pylons to begin with as thin of an atmosphere as possible, how long would it need to be to hypothetically work?

We need cheaper and more sustainable ways to enter space.

Would floating a launch rail at, say, 10km altitude with balloons and tethering it with a very long power cable—then floating payload up to it—be more feasible?

Chocolate rainmaker. Singer. Thinker. Voice

Last I looked at this, the absurd g forces made the set of viable payloads pretty small.

Some rough numbers in here
https://youtu.be/gQjbzuOA2mU

I think for crewed it can be something like 3g constant acceleration for 170 miles:

I think for crewed it can be something like 3g constant acceleration for 170 miles: https://en.wikipedia.org/wiki/StarTram#Generation_1.5_System_(lower-velocity_option)

i've always had this idea about launching our trash into the sun