Summary
Summary Physical Sciences
- Course
- Physical Sciences
- Institution
- 11
summary of grade 11 physics
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Vektore Horisontaal VertikaalF1h=cosx (rigting) F1v=sinx(rigting)
-grootte
F2h=cosx(rigting) F2v=sinx(rigting)
-rigting F3h=cosx(rigting) F3v=sinx(rigting)
FRH=F1h+F2h+F3h FRV=F1v+F2v+F3v
Skalare
-grootte
FRV FR
Xr=X1+X2
FRH
Pyth: R2=X2+Y2 - Pyth
tan =hoek - Hoek
kwidrant – hoek Kragtediagram-krag deur pyl voorgestel
0 Vrye kragtediagram – relatiewe grootte en
rigting vanaf kol
360 90 R= R+hoek
180 Opeenvolgende bewegings
Xr=X1+(-X2)
(ewewydigheid)
Gelyktydige beweging
R
-as by begin punt eindig is R= 0
-eweydig kragte balanseer mekaart uit
R=X1+X2 / tan
Komponente
F3 F1
F2
, Newton se wette Wrywings koefisient
Tiepe kragte 2 voorweerpe op mekaar
Toegepasde krag Ftoe - -staties ʮs
kontakkrag - -kineties ʮk
Gravitasie krag Fg - -altyd kleiner as een
- -geen eenheid
Normal krag -balanseer gravitasie - -Fk=ʮkN
krag
- -Fg=N
-loodreg op die vlak
- Mg=N
-N/Fn
Trekkrag -horisontale beweging Ekwilibrand- krag wat ander in ewewig hou
-vertikale kragte ewe
groot - R in ander rigting
wrywing -teenoorgestelde
rigting van beweging
-parralle aan
oppervlakte
-so groot soos
toegepasde krag of
kleiner nooit groter
Spankrag
Stoot en nie beweeg nie is wrywing groter as
krag
Statiese wrywing – stilstaandend
Kinetiese wrywing – beweging
10N 8N
10N 10N
10N 10.5N
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