Math/Trig problem. ATOT Challenge 1

[jspeicher]

A belt is going on a pulley (wheel) at 3600ft/sec. If the pulley has a radius of 2/pi , what is the speed of the belt in revolutions/min ?

 

[MaxFusion16]

you are kidding right?

 

[JTalbain]

wow... just wow

 

[Tifababy]

You shouldn't even need a calculator for this one! Try reading the book before you do your homework.

 

[FrustratedUser]

:Q

 

[Crescent13]

i'm in ninth grade and I can figure this one out!!

 

[jspeicher]

i have no idea where i am

 

[YOyoYOhowsDAjello]

Originally posted by: jspeicher
i have no idea where i am

ATOT

 

[shuan24]

the dudes from nebraska, give him a break. 😉

 

[jspeicher]

so far, you are all as smart as me.

 

[BlueWeasel]

Hint:
1) Perimeter of pulley
2) Belt distance traveled

 

[jspeicher]

yes, i know this.

arclength blah blah, distance traveled per revolution, blah blah.

i want to see an answer... i think you are all scared to get it wrong...

 

[hypn0tik]

Originally posted by: jspeicher
yes, i know this.

arclength blah blah, distance traveled per revolution, blah blah.

i want to see an answer... i think you are all scared to get it wrong...

I think you just want us to do your homework for you.

 

[jspeicher]

nope. dont even need to show the work, just the answer.

 

[BlueWeasel]

Then give us your answer and we'll tell you if it's right or not.

 

[NatePo717]

Originally posted by: jspeicher
yes, i know this.

arclength blah blah, distance traveled per revolution, blah blah.

i want to see an answer... i think you are all scared to get it wrong...

Sorry, too lazy to give an answer. Just do unit conversion.

 

[stan394]

42

 

[ViRGE]

Originally posted by: jspeicher
yes, i know this.

arclength blah blah, distance traveled per revolution, blah blah.

i want to see an answer... i think you are all scared to get it wrong...

Jesus Christ dude, the answer's 900RPM, you don't even have to do any wierd stuff because they put the radius in terms of freaking pi!. DIAF, FOAD, and all that good stuff.

 

[NatePo717]

oh and your almost 1337..

 

[jspeicher]

Originally posted by: ViRGE

Originally posted by: jspeicher
yes, i know this.

arclength blah blah, distance traveled per revolution, blah blah.

i want to see an answer... i think you are all scared to get it wrong...

Jesus Christ dude, the answer's 900ft/sec(or if you prefer, 900RPM), you don't even have to do any wierd stuff because they put the radius in terms of freaking pi!. DIAF, FOAD, and all that good stuff.

CONGRATS! WINNAR!

 

[BlueWeasel]

Oops! 🙂

 

[SVT Cobra]

Originally posted by: jspeicher

Originally posted by: ViRGE

Originally posted by: jspeicher
yes, i know this.

arclength blah blah, distance traveled per revolution, blah blah.

i want to see an answer... i think you are all scared to get it wrong...

Jesus Christ dude, the answer's 900ft/sec(or if you prefer, 900RPM), you don't even have to do any wierd stuff because they put the radius in terms of freaking pi!. DIAF, FOAD, and all that good stuff.

CONGRATS! WINNAR!

BAN op

 

[chuckywang]

Originally posted by: jspeicher

Originally posted by: ViRGE

Originally posted by: jspeicher
yes, i know this.

arclength blah blah, distance traveled per revolution, blah blah.

i want to see an answer... i think you are all scared to get it wrong...

Jesus Christ dude, the answer's 900ft/sec(or if you prefer, 900RPM), you don't even have to do any wierd stuff because they put the radius in terms of freaking pi!. DIAF, FOAD, and all that good stuff.

CONGRATS! WINNAR!

I don't think that's right. The belt goes 4 ft/revolution. Therefore it goes at 900 revolutions/sec, which corresponds to 15 revolutions/minute. Read the problem carefully.