View Full Version : anyone who knows physics of springs HELP
pablo4429
12-12-2006, 06:08 PM
ok heres the link
http://www.grossmont.edu/irene.palacios/math%20180/exam5b_key_sp05.pdf
number 6
now my question is, if she wants the force needed from 0 to 9 inches past natural why did she use 3/4 on the second integral?????? because 9 inchs of 24 inches is .375 and 3/4 of 24 is 18 inches. did she mess up??/
thanks to all
koleah
12-12-2006, 07:25 PM
ok heres the link
http://www.grossmont.edu/irene.palacios/math%20180/exam5b_key_sp05.pdf
number 6
now my question is, if she wants the force needed from 0 to 9 inches past natural why did she use 3/4 on the second integral?????? because 9 inchs of 24 inches is .375 and 3/4 of 24 is 18 inches. did she mess up??/
thanks to all
I think what it is is that the limits on the integral are in feet, hence her using a 2 in the first integral. If the spring goes from 0 to 9 inches in the second case, thats going from 0 to 3/4 feet.
This is why units should always be written in.
K
pablo4429
12-12-2006, 07:39 PM
dammit now i feel like a dumbass but thanks i was thinking what decimal 9 inches was of 2 feet not one foot thanks
the 3/4ft is equal to 9in.
what class is this for? calc II maybe. If so it is the hardest one. calc III, and diff eq are much easier.
pablo4429
12-13-2006, 03:23 AM
no this is 180 which i guess transferrs to calc 1
bentothejam1n
12-13-2006, 05:24 PM
how do you like grossmont? my sister plans on going there then go to san diego state afterwards
billybob_81067
12-13-2006, 07:36 PM
how do you like grossmont? my sister plans on going there then go to san diego state afterwards
MMMMMmmmmm... your sister...
Oh. Sorry. :D :p
pablo4429
12-14-2006, 12:47 AM
well considering my first semester jsut got through it didnt go that bad and wasnt as hard as i expected just a lot of writing in english but what do you expect
ya i plan to do the same thing as your sister except maybe UCSD, or MIT haha i dont think so but that would be cool
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