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 Yonny Ahmad Ismail 4312100002

Rangkuman

D’Alembert Method

∑❑

❑

 F − I  I =0

Contoh

!ree "ody Diagram

A#likasikan hukum II $e%ton

 P (t )−f  D−f S=m∙a

mu+ f  D+ f S= P ( t )

mu+c u+ku= P ( t )

D’Alembert &'  P (t )−f  D−f S− I  I =0

( s( 

7/17/2019 d Alembert

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)

*2

!s1!s2

*1

Contoh 2

!ree "ody Diagram

∑❑

 M − I θ=0

−f s2

∙ 1

4l−f s

1

∙ 3

4l− I θ=0

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tanθ=u

l

4

→u1=

lθ

4

tanθ=

 u

3 l

4

→u1=

3 lθ

4

−3 k ( l4 θ)∙  14 l−k ( 3 lθ4 ) ∙ 34 l− I θ=0

3

4k l

2θ+ I θ=0