Experimental Design B/C

Locked
nejanimb
Exalted Member
Exalted Member
Posts: 343
Joined: November 14th, 2008, 5:17 am
Division: Grad
State: PA
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by nejanimb » October 20th, 2009, 3:27 pm

That sounds like a painful ED - I'm having a hard time thinking of anything even halfway decent to do with that. Urgh!
Harriton '10, UVA '14
Event Supervisor in MA (prev. VA and NorCal)

User avatar
binary010101
Member
Member
Posts: 406
Joined: April 19th, 2007, 12:51 pm
Division: Grad
State: PA
Location: 美国,宾夕法尼亚州,雷丁市
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by binary010101 » October 20th, 2009, 4:32 pm

Tie washers to the string (for grip), tape on a vertical surface with the adhesives, pull, and time the length of time it takes for it to fall off.
Image ...NOT Communist.

Dual-Booting Windows 7 and Ubuntu 9.10

THE GAME.

"Mentat, solve thyself." ~ Dune
I follow the Path of the Beam.

User avatar
Avis_de-Incendia
Member
Member
Posts: 122
Joined: March 5th, 2009, 12:56 pm
Division: B
Location: Why would you want to know this?
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by Avis_de-Incendia » October 20th, 2009, 5:59 pm

binary010101 wrote:Tie washers to the string (for grip), tape on a vertical surface with the adhesives, pull, and time the length of time it takes for it to fall off.
Trouble with that is, it'd be hard to apply the same amount of force for each adhesive.

We tried using gravity as our force, but it took way too long. which is why I started yelling at the tape. ;)
Hello! :]

nejanimb
Exalted Member
Exalted Member
Posts: 343
Joined: November 14th, 2008, 5:17 am
Division: Grad
State: PA
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by nejanimb » October 20th, 2009, 7:23 pm

Adhesion is just a difficult topic because it's so difficult to make that really quantitative. I could think of a zillion different experiments to do with those materials, just not within the topic of adhesion.
Harriton '10, UVA '14
Event Supervisor in MA (prev. VA and NorCal)

Flavorflav
Member
Member
Posts: 1376
Joined: February 5th, 2006, 7:06 am
Division: Grad
State: NY
Has thanked: 0
Been thanked: 1 time

Re: Experimental Design B/C

Post by Flavorflav » October 21st, 2009, 6:26 am

Avis_de-Incendia wrote:
binary010101 wrote:Tie washers to the string (for grip), tape on a vertical surface with the adhesives, pull, and time the length of time it takes for it to fall off.
Trouble with that is, it'd be hard to apply the same amount of force for each adhesive.

We tried using gravity as our force, but it took way too long. which is why I started yelling at the tape. ;)
Why not use a smaller piece of adhesive so that the gravitational force would be proportionately larger? Then you could use number of washers as your variable instead of time.

User avatar
Avis_de-Incendia
Member
Member
Posts: 122
Joined: March 5th, 2009, 12:56 pm
Division: B
Location: Why would you want to know this?
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by Avis_de-Incendia » October 21st, 2009, 7:43 am

Flavorflav wrote:
Avis_de-Incendia wrote:
binary010101 wrote:Tie washers to the string (for grip), tape on a vertical surface with the adhesives, pull, and time the length of time it takes for it to fall off.
Trouble with that is, it'd be hard to apply the same amount of force for each adhesive.

We tried using gravity as our force, but it took way too long. which is why I started yelling at the tape. ;)
Why not use a smaller piece of adhesive so that the gravitational force would be proportionately larger? Then you could use number of washers as your variable instead of time.
Argh, should have thought of that. :(
Hello! :]

User avatar
duckiegirl2
Member
Member
Posts: 116
Joined: July 22nd, 2009, 1:36 pm
Division: C
State: TX
Location: taking a nap ( >.<) z z Z
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by duckiegirl2 » October 22nd, 2009, 7:24 am

That's a good idea! I can't believe We didn't think of that!
THIS IS BARTA!!!
( '< ')
( v v )
Image Image <(^_~)>
zyzzyva98 wrote:Is in the city/state/county/country/planet/township/home/galaxy/etc. of taking a nap

User avatar
2win
Member
Member
Posts: 553
Joined: March 3rd, 2009, 6:07 pm
Division: C
State: TX
Location: h-town
Has thanked: 0
Been thanked: 0
Contact:

Re: Experimental Design B/C

Post by 2win » October 23rd, 2009, 8:39 pm

Yeah, it is. But I remember we tried an extremely small piece, and it didn't hold... I guess the time limit was making us not think right.
k-tx. retiring from scioly.

User avatar
eyeball138
Exalted Member
Exalted Member
Posts: 402
Joined: November 13th, 2006, 1:01 pm
Division: Grad
State: PA
Location: Strath Haven High School
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by eyeball138 » November 1st, 2009, 6:36 am

Just curious, what do your teams do for the line of best fit?
My SHMS Team Results:
2007
Regionals- 3rd
States- 5th

2008
Regionals- 3rd
States- 5th

2009
Regionals- 2nd
States- 4th

2010
Regionals- 1st
States- 2nd
Nationals- 19th

C Division...

Paradox21
Staff Emeritus
Staff Emeritus
Posts: 395
Joined: January 11th, 2009, 7:10 am
Division: Grad
Has thanked: 0
Been thanked: 0

Re: Experimental Design B/C

Post by Paradox21 » November 1st, 2009, 8:00 am

eyeball138 wrote:Just curious, what do your teams do for the line of best fit?
Even with a non-graphing calculator, you can enter data points into your calculator. I would suggest you consult a calculator manual to figure out if your calculator can do it or not. I use a TI-30X IIS and it gives me all the statistical analysis I need for Experimental Design. For the “line of best fit,” more accurately called the least-squares regression line, all you have to do is record the slope and y-intercept values your calculator spits out for regression line then plug in 3 or 4 points and draw them on your graph. Then you use a straight edge and connect the dots.
When it comes to the future, there are three kinds of people: those who let it happen, those who make it happen, and those who wonder what happened.

Locked

Return to “2010 Lab Events”

Who is online

Users browsing this forum: No registered users and 1 guest