23
O
z
M
z
Figure 2.21.
z
O x
y
M(x,y)
r
φ
Figure 2.22.
2.1 DIFFERENTIAL EQUATIONS FOR PARTICLE MOTION UNDER VARIABLE FORCES
24 2. TOPIC D-2
M
O
25°
Figure 2.23.
x
O
x
M
Figure 2.24.
25
M(x,z)
z
x
Figure 2.25.
M
z
O
Figure 2.26.
2.1 DIFFERENTIAL EQUATIONS FOR PARTICLE MOTION UNDER VARIABLE FORCES
26 2. TOPIC D-2
y
O
x
M(x,y)
30°
Figure 2.27.
O
y
x
x
M(x,y,z)
Figure 2.28.
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