Question Bank • QB_SUB_FP_CHS_001 NAT • 2 Marks

Section 3: Farm Power

Tractors and Power Tillers

Subtopic: Mechanics of tractor chassis

Question Statement:

A rear-wheel-drive 2WD tractor has a static rear-to-front weight ratio of 60:40 on a wheelbase of $L = 2.0\text{ m}$. Total tractor mass is $2500\text{ kg}$ ($W = 24.525\text{ kN}$). The longitudinal distance of the center of gravity ahead of the rear axle centerline (in meters) is:

Answer Key:

0.8

Step-by-Step Solution & Explanation

Taking moments about rear axle contact point at static equilibrium: $W_f \times L = W \times x_g$ Since $W_f = 0.40 W$, $0.40 W \times 2.0 = W \times x_g \implies x_g = 0.40 \times 2.0 = 0.80\text{ m}$
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