perhitungan jarak pada gerak parabola di bidang miring
Post on 10-Dec-2015
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h=d ∙sinα
x=d ∙cosα
v0x=vx=v0∙cos (α+β )
v0 y=v0 ∙ sin (α+β )
02=v0 y2 −2 ∙ g ∙ hmax
2 ∙ g ∙ hmax=v02 ∙ sin2 (α+β )
hmax=v02 ∙ sin2 (α+β )2 ∙ g
∆ h=hmax−h
∆ h=v02 ∙ sin2 (α+β )2 ∙ g
−d ∙ sinα
∆ h=v02 ∙ sin2 (α+β )−2 ∙ d ∙ g ∙sinα
2 ∙ g
0=v0 y−g ∙ t 1
g ∙t 1=v0 ∙ sin (α+ β )
t 1=v0 ∙sin (α+β )
g
∆ h=12∙ g ∙ t 2
2
t 22=2∙∆h
g
t 2=√ 2( v02 ∙ sin2 (α+β )−2∙ d ∙ g ∙ sinα
2∙ g )g
t 2=√ v02 ∙ sin2 (α+ β )−2∙ d ∙ g ∙ sinαg2
x=v0x ∙ t x
t x=xv0 x
t x=d ∙cosα
v0 ∙cos (α+β )
t x=t 1+t2
d ∙cosαv0 ∙cos (α+ β )
=v0 ∙ sin (α+β )
g+√ v02 ∙ sin2 (α+β )−2∙ d ∙ g ∙ sinα
g2
d ∙g ∙cosαv0 ∙cos (α+ β )
=v0 ∙ sin (α+β )+√v02 ∙ sin2 (α+ β )−2∙ d ∙ g ∙ sinα
( d ∙g ∙cos αv0 ∙cos (α+ β )−v0 ∙sin (α+β ))
2
=v02 ∙sin2 (α+β )−2 ∙ d ∙ g ∙ sinα
( d ∙g ∙cosα−v02 ∙ sin (α+ β ) ∙cos (α+ β )
v0 ∙cos (α+β ) )2
=v 02∙ sin
2 (α+β )−2 ∙ d ∙ g ∙sin α
d2 ∙ g2∙cos2α−2 ∙ v02 ∙ d ∙ g ∙cos α ∙ sin (α+β ) ∙cos (α+β )+v0
4 ∙sin2 (α+β ) ∙cos2 (α+β )v02 ∙cos2 (α+ β )
=v02 ∙sin2 (α+β )−2 ∙ d ∙ g ∙ sinα
d2 ∙ g2 ∙cos2α−2∙ v02 ∙ d ∙ g ∙cosα ∙ sin (α+ β ) ∙cos (α+β )+v0
4 ∙ sin2 (α+β ) ∙cos2 (α+β )=v04 ∙ sin2 (α+β ) ∙cos2 (α+β )−2 ∙ v0
2 ∙ d ∙ g ∙ sinα ∙cos2 (α+β )
d2 ∙ g2 ∙cos2α−2∙ v02 ∙ d ∙ g ∙cosα ∙ sin (α+ β ) ∙cos (α+β )=−2 ∙ v0
2∙ d ∙ g ∙ sinα ∙cos2 (α+ β )
d ∙g ∙cos2α−2 ∙ v02∙cos α ∙ sin (α+β ) ∙cos (α+β )=−2∙ v0
2 ∙ sinα ∙cos2 (α+ β )
d ∙g ∙cos2α=−2 ∙ v02 ∙sinα ∙cos2 (α+β )+2 ∙ v0
2∙cos α ∙sin (α+β ) ∙cos (α+β )
d=2 ∙ v0
2 ∙cos (α+β ) (−sinα ∙cos (α+β )+cos α ∙sin (α+β ) )g ∙cos2α
d=2 ∙ v0
2 ∙cos (α+β ) [−sinα (cos α ∙cos β−sinα ∙ sin β )+cosα (sinα ∙cos β+sin β ∙cosα ) ]g ∙cos2α
d=2 ∙ v0
2 ∙cos (α+β ) (−sinα ∙cos α ∙cos β+sin2α ∙sin β+sinα ∙cos α ∙cos β+sin β ∙cos2α )g∙cos2α
d=2 ∙ v0
2 ∙cos (α+β ) (sin2α ∙ sin β+sinβ ∙cos2α )g ∙cos2α
d=2 ∙ v0
2 ∙cos (α+β ) ∙sin β (sin2α+cos2α )g ∙cos2α
d=2 ∙ v0
2 ∙cos (α+β ) ∙sin βg ∙cos2α
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