Ch. 4 · Pre-Drive Conduct
Which statement correctly describes the magnitude of centrifugal force?
[Multiple choice · Medium]
- A.Centrifugal force increases as the radius of a curve becomes larger, and increases in proportion to speed
- B.Centrifugal force increases as the radius of a curve becomes smaller, and increases in proportion to speed
- C.Centrifugal force increases as the radius of a curve becomes smaller, and increases in proportion to the square of the speed✓
- D.Centrifugal force increases as the radius of a curve becomes larger, and increases in proportion to the square of the speed
Answer: C: Centrifugal force increases as the radius of a curve becomes smaller, and increases in proportion to the square of the speed
Explanation
Section "2. Natural Forces Acting on Vehicles (2) Centrifugal Force" states: "The magnitude of centrifugal force increases as the radius of a curve becomes smaller, and increases in proportion to the square of the speed." The key points are the smaller radius and proportionality to the square of the speed.
Driving school curriculumStage 2 – Topic 5: Human capability and driving
Source: Ch. 4 Pre-Drive Conduct · Section (第５節 安全運転に必要な知識など) · ２ 自動車に働く自然の力 (２) 遠心力 - 遠心力の大きさは、カーブの半径が小さいほど大きくなり、速度の２乗に比例して大きくなります。
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Source content excerpted from the NPA “Rules of the Road” instructional manual, in the public domain under Japanese Copyright Act Article 13(2). Explanations are AI-assisted and copyrighted by the MenkyoQuest editorial team.