Subtopic: Human engineering and safety considerations in design of tractor and agricultural implements
Question Statement:
According to ISO 5008 standards for agricultural tractor field testing, whole-body vibration acceleration values are weighted across human body biodynamic sensitivity in the frequency range of:
Options:
(A) $4 - 8\text{ Hz}$ in vertical direction and $1 - 2\text{ Hz}$ in horizontal direction
(B) $100 - 200\text{ Hz}$
(C) $1000 - 2000\text{ Hz}$
(D) $0.01 - 0.05\text{ Hz}$
Answer Key:
A
Step-by-Step Solution & Explanation
The human spine exhibits primary mechanical resonance at $4-8\text{ Hz}$ in the vertical axis, where vibration weighting curves peak.