Friction
/ Frictional Force
摩
擦力 mó cā lì
Friction 摩
擦力 mó cā lì
is a force
力
lì
that opposes (goes against) motion. Friction
摩擦力 mó
cā lì
occurs between two surfaces 表面
biǎo miàn that are in contact 接
触 jiē chù.
If an object 物体 wù tǐ lying on a surface is exerted (given) a push 推 tuī (force 力 lì) of F1 Newtons and the frictional force 力 lì that exists between the object 物 体 wù tǐ and the surface 表 面 biǎo miàn 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 质 量 zhì liàng
a = acceleration 加速度 jiā sù dù
Therefore,
FR = F1- F2
or
ma = F1- F2
The object would then move at an acceleration 加速度 jiā sù dù of
a = (F1- F2) / m
if there is a positive resultant force..
If an object 物体 wù tǐ lying on a surface is exerted (given) a push 推 tuī (force 力 lì) of F1 Newtons and the frictional force 力 lì that exists between the object 物 体 wù tǐ and the surface 表 面 biǎo miàn 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 质 量 zhì liàng
a = acceleration 加速度 jiā sù dù
Therefore,
FR = F1- F2
or
ma = F1- F2
The object would then move at an acceleration 加速度 jiā sù dù of
a = (F1- F2) / m
if there is a positive resultant force..
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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.
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.