With the repeated comparison against acceleration force of bullets and other projectile at supersonic/hypersonic speed, I should also remind folks that in the case of spinning the g-force is lateral.
With a cannon/rail launched projectile, the tip of the the projectile is pointing in the same direction as acceleration. The acceleration's "g-force" points at the opposite direction (Newton's 3rd Law), so the "g-force" is pointing at the bottom. Say you have a PCB paced with bottom facing projectile's bottom, the entire PCB is subjected to exactly the same g-force. So, a 1gm part will weight 11kg. The PCB can be thick enough to hold the 11000x the weight.
With a spinning force launch, the centrifugal "g-force" is pointing away from the center of rotation - so the centrifugal acceleration and the centrifugal force are lateral - the force is towards the side of the rocket and not the bottom or top. If you mount the PCB aligned with the bottom of the rocket, all the g-forces are lateral against that PCB. That 1 gm part has 11kg pulling it sideways. A regular PCB's solder pad will likely not hold up against 11kg force pulling that soldered part sideways. The solder itself may not have enough cohesive force to hold itself together and the solder itself may break. Moreover, one side of the PCB will be closer to the center of rotation than the other side. So one side is being pull at a greater force than the other. That force translate to a force stretching the PCB. So, mechanical re-enforcement will be needed all over the place and with every payload for this lateral force. Probably doable, but a huge and expensive job. Probably more than the cost of a traditional rocket launching itself.
Even the rocket itself will be subjected to a bending force. If you mount the middle, the two ends will bend outward. If you mount the ends, the middle will bend outward.
You can get around them by mounting the rocket flat - that is the front end of the rocket pointing at the center of rotation. Now the centrifugal g is pointing "down" toward the base of the rocket. But with laying flat, now you end up with a different problem. Your rocket will launch sideways, and your rocket will rotate end-to-end at launch because of the launch speed difference (front end vs tail end).
You can picture that rotation easily. Think about holding a box with both hands each holding one side of the box. Now you try to throw that box upward by moving your hands upward - except you move your left hand at twice the speed of the right. Your box will end up rotating.
The bottom of the rocket will travel at (2*pi*radius*RPM). The inside (top) will travel at (2*pi*(radius-X)*RPM) where X is the length of the rocket. So the two will differ. In the case of a vertical launch, the X is merely the diameter of the rocket is presumably small in comparison to the length of the rocket, so the rotation would be much more controllable. When laying flat, X is the length of the rocket, now the speed delta is much bigger. So your launched rocket is pointing sideways, and rotating end to end. Again, correctable after launch but a much bigger problem than before.
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So, as said by others before, at that spinning g-force, it is pretty much reduced to launching raw material only.
I have another potential use however. Those who wants the ashes send into low-orbit space. Cans of ashes can be nicely arranged to handle the g-force, and the occupant is no longer g-force sensitive anymore. So, the family announces: You can see grandpa's re-entry fire trail on January 1, at 10 pm. Look up the eastern sky, and grandpa that fire trail you see is grandpa saying goodbye.