# calculasions

Posted by munchit1
 calculasions November 16, 2014 06:08PM Registered: 7 years ago Posts: 159
has any one got a link to a no nonense site for all the calculasions for sizing the motors?

boy have i read watch and heard some nasty re uterasions of the english words lol.. jusses its a what?....took me 5 sitting to figure out one guy was on about the radius 'r'...JUST COULDNT WORK OUT WHERE HE GOT TO TALK IN THAT MANOUR LOL.

or can you lay it out with mising what the letters stand for (thats most common on the the net, e.g. p~r doobley noffin byt the W of the angular moment and there you have it 5...nothing else just leters no exsplansions...total woffle).

my head izz battered by the BS of de tinter net...
 Re: calculasions November 17, 2014 05:17AM Registered: 7 years ago Posts: 159
first step..

http://www.jvl.dk/files/_2011clean/pdf/la011gb.pdf

some dooby ferks to look at.
 Re: calculasions November 17, 2014 08:16AM Registered: 7 years ago Posts: 159
newtons second law. http://www.physicsclassroom.com/class/newtlaws/Lesson-3/Newton-s-Second-Law

is there a typo at the end of question 4?

4. Suppose that a sled is accelerating at a rate of 2 m/s2. If the net force is tripled and the mass is halved, then what is the new acceleration of the sled?

The original value of 2 m/s/s must be multiplied by 3 (since a and F are directly proportional) '''and divided by 1/2''' (since a and m are inversely proportional)

shouldnt that read the accelerastion doubles? not halfs, when the mass is halfed.
 Re: calculasions November 17, 2014 08:37AM Registered: 7 years ago Posts: 159
 Re: calculasions November 17, 2014 08:45AM Registered: 11 years ago Posts: 643
Yes, that's a typo. Looks like they copied the answer from question 3 and forgot to tweak the reasoning.
 Re: calculasions November 17, 2014 06:01PM Registered: 7 years ago Posts: 159
ahh gdgd.. i'm getting some where then lol.

Edited 1 time(s). Last edit at 11/17/2014 06:06PM by munchit1.
 Re: calculasions November 18, 2014 05:43PM Registered: 7 years ago Posts: 159
i just notised on this page theres some missing on the 'units used' bit at the end of of page.

eg. theres a ' η ' that apears in several formulas but no mension og wtf it is? i beleive this is the factor of nerrr you dont know i do! lol....its why folks give up on maths as too dificult, theres always summut missed out.

can any one complete the listings? or shed light to the mysterious 'η', it must have a purpose in life, other than confusesing us poor ignorent folks lol.

Quote
munchit1
http://www.technologystudent.com/gears1/geardex1.htm

(and yup its eta..lol! but what it doing there? http://en.wikipedia.org/wiki/Eta..fink i spat my dummy out....

Edited 1 time(s). Last edit at 11/18/2014 05:45PM by munchit1.
Sorry, only registered users may post in this forum.