Physics circular motion

L.K.

回復 10# screen
我都唔知....

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F=ma
F increase
m會唔會大左?

aildux

會?-.-
screen 發表於 24-2-2010 20:55

我O咗....

consider X direction:T=Lmw^2.................1

consider Y direction:g=Lw^2cosθ.............2

from 1, when w increases, L decreases

consider 2, when w increases, L decreases, whereas cosθ remains unchanged.

之後我諗錯 呢個解法先啱

REQUIEM

我O咗....

consider X direction:T=Lmw^2.................1

consider Y direction:g=Lw^2cosθ....... ...
aildux 發表於 26-2-2010 19:15

θ唔等於90度果陣
第一條式岩咩?

永樂

你唔明個experiment
個tension係由個砝碼提供