drewcassidy/Mach 9 spaghetti.txt

## Mach 9 spaghetti.txt
<Shutesie> How fast would I have to spin a spaghetti noddle (indestructible one) above my head in order to hit all the rain falling towards me
<Cineboxandrew> hmm. rain falls at 10m/s and has a max diameter of 4mm, spaghetti is nominally 30cm long and 2mm thick, which means that the end of the noodle needs to pass through a given point at least (4mm+2mm)/10m/s= 0.6ms.
so you need to spin the noodle at at least 1.66khz
<CobaltWolf> what the fuck
<Katten> Hmm, as a skydiver I fall 50m/s. I have the same density as water, but a droplet is an optimized aerodynamic shape. I would guess it would have abotu the same or faster speed as me?
<Cineboxandrew> for a tip speed of 3.14km/s,  or about mach 9
<Katten> Is that gonna have any ramifications for the air in the room? :smiley:
<Shutesie> What kind of energy is stored in a piece of spaghetti going mach 9
<Cineboxandrew> yes you and any rain nearby will be instantly vaporized. uh, for some reason I cant find the mass of a spaghetti noodle. brb getting a scale. one cooked spaghetti noodle weighs about 3g.
<Cineboxandrew> 1/2mv^2, bit its rotating so we divide that by 2 again
<G'th> Does a spaghetti noodle have the structural integrity to survive Mach 9
<Cineboxandrew> no. 7.4kJ
<Deleted User> how much in a "normal"...9mm parabellum cartridge?
<Cineboxandrew> is that pasta because we're doing pasta right now
<G'th> obviously 9kj
<Cineboxandrew> thats a force of 25kN on the end of the noodle
	<Shutesie> How fast would I have to spin a spaghetti noddle (indestructible one) above my head in order to hit all the rain falling towards me
	<Cineboxandrew> hmm. rain falls at 10m/s and has a max diameter of 4mm, spaghetti is nominally 30cm long and 2mm thick, which means that the end of the noodle needs to pass through a given point at least (4mm+2mm)/10m/s= 0.6ms.
	so you need to spin the noodle at at least 1.66khz
	<CobaltWolf> what the fuck
	<Katten> Hmm, as a skydiver I fall 50m/s. I have the same density as water, but a droplet is an optimized aerodynamic shape. I would guess it would have abotu the same or faster speed as me?
	<Cineboxandrew> for a tip speed of 3.14km/s, or about mach 9
	<Katten> Is that gonna have any ramifications for the air in the room? :smiley:
	<Shutesie> What kind of energy is stored in a piece of spaghetti going mach 9
	<Cineboxandrew> yes you and any rain nearby will be instantly vaporized. uh, for some reason I cant find the mass of a spaghetti noodle. brb getting a scale. one cooked spaghetti noodle weighs about 3g.
	<Cineboxandrew> 1/2mv^2, bit its rotating so we divide that by 2 again
	<G'th> Does a spaghetti noodle have the structural integrity to survive Mach 9
	<Cineboxandrew> no. 7.4kJ
	<Deleted User> how much in a "normal"...9mm parabellum cartridge?
	<Cineboxandrew> is that pasta because we're doing pasta right now
	<G'th> obviously 9kj
	<Cineboxandrew> thats a force of 25kN on the end of the noodle