60 3. TOPIC D-3
Problem 3.30. At some instant the load D is placed at the center of the plate and released without initial ve-
locity at non-deformable springs. At this instant the low endpoint B of the spring moves vertically according to the
equation ξ(t). e origin of the axis x corresponds to the middle position the point B (ξ = 0).
D
x
C
B
ξ
ξ
Figure 3.30.
3.2 SAMPLE PROBLEM
Two loads D and E are located on the smooth inclined surface and supported by the spring (Figure 3.31a). At some
instant the load E is removed and simultaneously the low endpoint B of the springs moves along the inclined surface
according to the equation ξ (t). Determine the equation of motion of the load D. e given parameters: m
D
= 2kg, m
E
= 3 kg, c = 6
N
= 600
N
, ξ = 0.02 sin 10t (m).
cm m
..................Content has been hidden....................
You can't read the all page of ebook, please click here login for view all page.