Q3 Assume that the 300kg trailer shown below in figure Q3 is fitted with two springs and two shock absorbers. 1.2 m Figure Q3 (c) What range of driving speeds (in km/hr) should the owner avoid if the amplitude of vertical vibration of the 300kg trailer (measured relative to the road surface) is not to exceed 40mm as it travels over the corduroy road whose contour may be expressed by a sine or cosine term as shown in figure Q3. Assume that the wheels are in contact with the road at all times. Damping Ratio = 0.28 Natural frequency=10 Spring constant=30,000 The question will use X- Or Folk {[1 - (n/a)²1² + [25/12) 1/2 50 mm x = (As cos uut + A4 sin uat) e-Sunt Or both

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Machine Dynamics

Q3 Assume that the 300kg trailer shown below in figure Q3 is fitted with two springs and two
shock absorbers.
The question will use
Figure Q3
(c) What range of driving speeds (in km/hr) should the owner avoid if the amplitude of vertical
vibration of the 300kg trailer (measured relative to the road surface) is not to exceed 40mm as
it travels over the corduroy road whose contour may be expressed by a sine or cosine term as
shown in figure Q3. Assume that the wheels are in contact with the road at all times.
Damping Ratio = 0.28
Natural frequency=10
Spring constant=30,000
X-
Or
Folk
{[1-(w/w)²12 + [25/12) 1/2
-1.2 m
- Sunt
x = (A3 cos uut + A4 sin wat) e
Or both
50 mm
Transcribed Image Text:Q3 Assume that the 300kg trailer shown below in figure Q3 is fitted with two springs and two shock absorbers. The question will use Figure Q3 (c) What range of driving speeds (in km/hr) should the owner avoid if the amplitude of vertical vibration of the 300kg trailer (measured relative to the road surface) is not to exceed 40mm as it travels over the corduroy road whose contour may be expressed by a sine or cosine term as shown in figure Q3. Assume that the wheels are in contact with the road at all times. Damping Ratio = 0.28 Natural frequency=10 Spring constant=30,000 X- Or Folk {[1-(w/w)²12 + [25/12) 1/2 -1.2 m - Sunt x = (A3 cos uut + A4 sin wat) e Or both 50 mm
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