knol2go knol
  Friction
knol2go knol
 
Friction is a
force that opposes (goes against) motion. Friction occurs between two surfaces that are in contact. If an object lying on a surface is exerted (given) a push (force) of F1 Newtons and the frictional force that exists between the object and the surface is F2, then the resultant force, FR is as follows.
 
Resultant force, FR F1- F2
 
According to Newton's 2nd Law of Motion,
FR= ma
where
m =
mass
a =
acceleration 

Therefore,
FR F1- F2
or
ma = F1- F2
   
The object would then move at an
acceleration of
a = (
F1- F2) / m
if there is a positive
resultant force.


knol2go knolknol2go knolsemail usfacebook.com/knol2gotwitter.com/knol2goknol2go knolsknol2go knol
knol2go knol


  NotaKita.com

Daya Geseran

     
Daya geseran merupakan
daya yang menentang gerakan. Geseran wujud di antara dua permukaan yang bersentuh. Sekiranya, satu objek dikenakan daya tolakan bersamaan F1 Newton dan daya geseran di antara objek dan permukaan ialah F2 maka daya paduan FR ialah
 
Daya paduan, FR F1- F2
 
Menurut Hukum Gerakan Newton Kedua
FR= ma
di mana
m =
jisim
a = pecutan
 
Yakni,
FR F1- F2
or
ma = F1- F2
 
Objek akan bergerak pada pecutan
a = (
F1- F2) / m
sekiranya terdapat
daya paduan yang positif.


knol2go knolknol2go knolsemail usfacebook.com/knol2gotwitter.com/knol2goknol2go knolsknol2go knol
knol2go knol
www.easy-hit-counter.com
Tag Heuer