Page 170 - Standard Handbook Of Petroleum & Natural Gas Engineering
P. 170
Dynamics 155
z
A
4t
'\ x = R, COS e
r = R,i + Z,k
Figure 2-11. Equations of motion in a cylindrical coordinate system.
z
A
X= )r 1 sin Q cos e
Y= lr( sin Q sin e
Z= Irl cos Q
Figure 2-12. Equations of motion in a spherical coordinate system.
