School books are printed on a four color web offset printing press a cylinder on a press has a 13.37 inch diameter. The linear speed of a point on the cylinder's surface is 16.53 feet per second. What is the angular speed of the cylinder in revolutions per hour? Printers often refer to the angular speed as impressions per hour or IPH.

HELP!

Question

School books are printed on a four color web offset printing press a cylinder on a press has a 13.37 inch diameter. The linear speed of a point on the cylinder's surface is 16.53 feet per second. What is the angular speed of the cylinder in revolutions per hour? Printers often refer to the angular speed as impressions per hour or IPH.

HELP!

anonymous · Answer

@genius12

davidusa · Answer

hi what art of math is this?

anonymous · Answer

angular/ linear velocity

davidusa · Answer

which is... physics or what

anonymous · Answer

umm well if you dont know how to do it. its ok just say so

anonymous · Answer

its math

davidusa · Answer

lets see. let me look longer and carefully

davidusa · Answer

idk

davidusa · Answer

draw a diagram- it makes it easier to understand the question.
i will summon a bunch of my friends.

anonymous · Answer

ok thnks for trying i guess

davidusa · Answer

@Homeworksucks 
@TheForbiddenFollower 
@wolfe8
@ducati289 
@habibmatatta

davidusa · Answer

just random people except for wolfe8- i know her

davidusa · Answer

@ducati289 
@ybarrap 
@aurorablue01 
@Lethal 
i know aurorablue

anonymous · Answer

Oh Em Gee

davidusa · Answer

hi wolfe thanks for coming
thanks letal

anonymous · Answer

We need to do some DA here

davidusa · Answer

what?

anonymous · Answer

Dimensional Analysis

davidusa · Answer

oh ok

anonymous · Answer

yup thats it

wolfe8 · Answer

The formula for angular speed is $$\omega =\frac{ v }{ r }$$

davidusa · Answer

@esshotwired 
@RadEn 
@WinterRaine 
@surjithayer

anonymous · Answer

@DavidUsa

anonymous · Answer

@wolfe8 no clue what youre talkin abt........

davidusa · Answer

what do you want

@Lethal @Lethal @Lethal @Lethal @Lethal @Lethal @Lethal @Lethal @Lethal

anonymous · Answer

That's the formula for Angular Velocity which is what we're trying to find in rph

anonymous · Answer

Right now we're in seconds so we also have to do some DA

anonymous · Answer

can u like draw it so i can actually see what the ratios look like?

wolfe8 · Answer

Try reading this first: http://hyperphysics.phy-astr.gsu.edu/hbase/rotq.html

davidusa · Answer

i dont know anything about this stuff so please dont mention me with the @ symbol

anonymous · Answer

this is what ive got so far. tell me if its right??

anonymous · Answer

Dude perl already helped you out with this he said:
w = (2 * 16.53 ) / 13.37 * rad/sec * rev/ (2pi * rad) * 3600 sec/ 1hr

anonymous · Answer

attachment

davidusa · Answer

bump this question up music101

anonymous · Answer

This is very good for your matter http://people.wku.edu/david.neal/117/Unit2/AngVel.pdf

anonymous · Answer

already read that

anonymous · Answer

im just asking if what i have up there is all i need

anonymous · Answer

c=pi d=pi*13.37/12=3.5 feet
time taken to complete one revolution=3.5/16.53 =0.21175
no. of revolutions per hour=/0.21175*3600=17001 revolutions per hour

anonymous · Answer

ok thanks