ͧ١ԡ (simple pendulum)

Ԩó١١ԴѺ͡ ӹͧǡѺͧ١ԡ ˹
m ͧ١
L ͧ͡
Q ͡ӡѺ
ҡٻ١ Ѻ Ѵ x x = L ѧѴͧѵҨ¹ x Ԩóç˹ѡ mg ͧ١ öç͡ 2 ǹ mgcos ǡѺ͡ mg sin ç mg sin ͧç֧Ѻ١
ç֧Ѻ = F = mg sin
ҧͧѵ = x = LQ
ѧ ç֧Ѻ֧üѹçѺҧ ͧ١ԡ SHM ˹
sin =
ѧ ç֧Ѻ = F = mg
ҧ = x = LQ
֧ ç֧ѺѴǹçѺҧ
ͧ١ԡ ֧ SHM
Ԩóç֧Ѻ
F = mg
ҡٻ
=
ѧ F = mg
ҡ 2 ͧǵѹ
F = ma
ѧ ͧԡ = a =
ͧҡ͹ͧ١ SHM
ѧ a = 2x
2x = g
2 =
=
w 繤ԧ (angular frequency) = 2f
ѧ = 2f =
f = = ͧ觢ͧ١
T = = 2 = Һͧ觢ͧ١
: ³ä , Ե¹ 2 Ѻ 3.

 

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