Examkin

Question

Difficulty: HardBalance and Center of Gravity

Uneven side-to-side cargo weight distribution increases the risk of vehicle rollover on curves, but does not affect wheel lockup or directional stability during straight-line braking.

Answer: Answer

Answer

False
The statement is false because proper side-to-side weight distribution is vital for both lateral rollover resistance and straight-line braking performance. An uneven lateral load reduces the vertical force on the high side's tires, causing them to break traction and lock up earlier under heavy braking, which can induce a violent pull or skid.

Step-by-Step Solution

1
Analyze the mechanical effects of unequal side-to-side cargo distribution on axle wheel ends.
Identified that shifting cargo weight toward one side concentrates normal downward force on one side of the vehicle while substantially reducing it on the opposite side.
Tire braking friction is directly proportional to the normal vertical load pressing the tire against the road surface.
2
Evaluate the vehicle dynamics during straight-line braking with unequal tire loading.
Recognized that when brakes apply equal torque across an axle, the lightly loaded tires exceed their available friction limit first and lock up.
Premature wheel lockup on the lighter side causes unequal braking drag, vehicle pull, and potential jackknife or skid conditions.
3
Determine the truth value of the complete statement.
The claim that lateral imbalance has no effect on straight-line braking stability is incorrect.
Proper side-to-side balance is mandatory for both rollover prevention during turns and balanced traction during braking.

Key Concept

Lateral Cargo Balance and Dynamic Braking Stability
Estimated Time:1m 15s
Rate this question

Topics

Balance and Center of Gravity

More questions from this topic