Just be sure it's clean (you don't want to vape French Roast do you)?
I usually do a gram or two at a time, but you could do a fraction of a gram well, I bet?
These guys are actually kind of fun, too:
http://www.amazon.com/gp/product/B000P15LX0/ref=ox_sc_sfl_title_5?ie=UTF8&psc=1&smid=A368LE113Q5PAL
Save the double take then. The proper term is actually
centrifugal force, the 'being thrown outward' as in 'centrifugal pump'. Centripetal force is the real countering force keeping the pump impeller from exploding. the rock has centrifugal force throwing it outward, held by the centripetal of the string holding it back.
https://en.wikipedia.org/wiki/Centrifugal_force
https://en.wikipedia.org/wiki/Centripetal_force
And I wouldn't worry too much about the poor flowers, it's really over quite quickly and painlessly. The difference between the guillotine and being roasted at the stake?