Question Bank • QB_SUB_FP_CHS_003 MSQ • 2 Marks

Section 3: Farm Power

Tractors and Power Tillers

Subtopic: Mechanics of tractor chassis

Question Statement:

Which parameters directly influence the longitudinal static and dynamic stability of an agricultural tractor against backward tipping?

Options:

  • (A) Height of the center of gravity ($z_g$)
  • (B) Longitudinal position of the center of gravity ahead of rear axle ($x_g$)
  • (C) Height of the drawbar hitch point above ground
  • (D) Diameter of the tractor steering wheel

Answer Key:

A, B, C

Step-by-Step Solution & Explanation

Backward tipping stability limit: $R_f = \frac{W x_g - P h_d - W z_g \sin\theta}{L} \ge 0$. It depends strictly on $x_g$, $z_g$, drawbar height $h_d$, and wheelbase $L$.
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