CHAPTER 6. VECTORS
= =
=
Figure 82.
=
- pÅ~ä~ê=mêçÇìÅí=áå=`ççêÇáå~íÉ=cçêã=
fÑ=ì=()uNIvNIwN
r
I=î=(uOIvOIwO)
r
I=íÜÉå==
ì⋅î=uNuO+vNvO+wNwO
r r
K=
=
- ^åÖäÉ=_ÉíïÉÉå=qïç=sÉÅíçêë==
fÑ=ì=()uNIvNIwN
r
I=î=(uOIvOIwO)
r
I=íÜÉå==
O
O
O
O
O
O
O
N
O
N
O
N
N O N O N O
u v w u v w
uu vv ww
Åçë
+ + + +
+ +
θ= K=
=
`çããìí~íáîÉ=mêçéÉêíó=
ìî î ì
r r r r
⋅ = ⋅ =
- ^ëëçÅá~íáîÉ=mêçéÉêíó=
()()ì î ì î
r r r r
λ ⋅μ =λμ ⋅ =
=
- aáëíêáÄìíáîÉ=mêçéÉêíó=
ì()î ï ì î ì ï
r r r r r r r
⋅ + = ⋅ + ⋅ =
=
- ì⋅î=M
r r
=áÑ=ì
r
Iî
r
=~êÉ=çêíÜçÖçå~ä=E
O
π
θ= FK=
=
- ì⋅î>M
r r
=áÑ=
O
M
π
<θ< K=
=
