<< Chapter < Page Chapter >> Page >

Die tipe krag wat ons op die karton uitgeoefen het, is ‘n _ krag, want dit pers die karton saam. Die dele van ‘n struktuur waarop die krag uitgeoefen word, word stutte of kolomme genoem.

[LU 1.3]

AGTERGROND

Wanneer strukture nie sterk genoeg is om kragte te weerstaan wat op hulle inwerk nie, breek hulle. Baie dun, lang stutte of kolomme buig en breek maklik.

Opdrag 7B

Uitdaging :

Probeer dieselfde eksperiment, maar gebruik folio’s i.p.v. manilla.

Opdrag 8A

Kom ons ondersoek die horisontale sterkte van dopstrukture.

Opdrag aan die onderwyser:

Verdeel die klas in groepe. Deel aan elke groep ses A4-manillas van dieselfde dikte uit, twee polistireenglase wat as stutte kan dien en ‘n polistireenglas met ‘n hoeveelheid spykers wat die las kan voorstel.

Opdrag aan elke groep:

Vou die manilla in strukture wat buigkrag moet weerstaan. So ‘n struktuur word ‘n balk genoem.

Eksperimenteer met verskillende strukture en kyk watter struktuur die meeste spykers kan ondersteun. Die lengte van die balk moet dieselfde as die oorspronklike lengte bly. Die spykers oefen ‘n drukkrag op die balk uit en op die onderste gedeelte word ‘n trekkrag na weerskante uitgeoefen. Maak ‘n regmerkie by die tipe balk wat die meeste spykers kan ondersteun.

Opdrag 8B

Probeer nou dieselfde eksperiment, maar gebruik folio’s i.p.v. manillas.

[LU 1.3]

Opdrag 9

Toepassing :

Waarom is daar riffels in konfytblikke, karton en sinkplate?

[LU 3.2]

Opdrag 10

Noem drie maniere hoe ‘n 3D-struktuur meer stabiel gemaak kan word.

  1. Gebruik _ of _ om die struktuur te hou.
  2. Maak die _ van die struktuur breër.
  3. Maak die _ van die struktuur _ .

‘n _ (onder grond, breë deel) van ‘n gebou maak die mure en ander strukture meer stabiel.

[LU 2.1]

AGTERGROND

Soorte strukture

  • dop (verskaf ondersteuning van buite af, sterkte lê in dop, taamlik dun, meestal gekurf, hol)
  • raam (dele word verbind, ondersteun goed van binnekant af, word weggesteek)
  • soliede (bestaan geheel en al uit materie, word versterk)

Baie van die strukture wat mense maak, is ‘n kombinasie van rame, doppe en soliede strukture. Party lyk soos doppe, maar is eintlik rame wat met dun materiaal bedek is. Ons noem die dun materiaal die vel .

Opdrag 11

Kopieer en voltooi die volgende tabel deur ‘n regmerkie onder die toepaslike kolom te maak.

Struktuur Dop Raam Solied
‘n Lang brug
‘n Huis
‘n Telefoonpaal
‘n Fiets
‘n Plastiekglas
Kleiteëls
‘n Kartondoos
‘n Damwal
‘n Koeldrankblikkie
Jou geraamte

[LU 2.1]

AGTERGROND

Strukture kan natuurlik of mensgemaak wees. Ontwerpers van sekere strukture kry dikwels hulle idees uit die natuur.

Opdrag 12

Gebruik twee A4-bladsye en plak prente van ten minste vyf mensgemaakte strukture op een bladsy en vyf natuurlike strukture op die ander. Skryf by elkeen watter soort struktuur, m.a.w. ‘n dop, ‘n raam of ‘n soliede struktuur, dit is.

[LU 1.3]

Opdrag 13

Probeer om een voorbeeld te kry van ‘n struktuur wat die ontwerpers of ingenieurs moontlik op ‘n natuurlike struktuur gebaseer het. Plak die prent of teken dié voorbeeld op ‘n A4-bladsy.

[LU 1.3]

AGTERGROND

Raamstrukture is dele wat verbind word om ‘n raam te vorm. Ondersteuning word dus van die binnekant verleen en die raam is meestal weggesteek. ‘n Raamstruktuur bestaan uit verskillende dele wat struktuurdele genoem word.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Tegnologie graad 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10978/1.2
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Tegnologie graad 5' conversation and receive update notifications?

Ask