0 (0 ) (0 )=T → ⇔  V A T V A V A BΩ Ω Φ Ω Φ ΦSIN(

1- Cơ sở lý thuyết:

⁰

^{(0 )}

^{(0 )}

=

t

 →

⇔







v

A

t

v

A

v

A

b

ω

ω

ϕ

ω

ϕ

ϕ

sin( .

)

sin

sin

= −

+

= −

−

=

=

(0 )

(0 )









ω







a

x

Vậy

⁰

^{( 0 )}

ω

ϕ

=

+

←

→

=

+



cos(

)

^t

,

x

A

t

x

a

b i

v

( 0 )



= −

b

=a x

(0)

ϕ⇒ = − → ∠ ⇒ = +