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English Translations » 【设计及技术圈】 » 【Daily Question】Theoretical Foundation 2020.01.18

【Daily Question】Theoretical Foundation 2020.01.18

2020-01-18View Original

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Multiple-choice question: The three forces F1, F2, and F3 acting on a plane form an equilateral triangle (see figure). The final simplified form of this force system is ( ). (A) A system of balanced forces (B) A resultant force (C) A resultant couple (D) A resultant force and a resultant couple. Answer: B. According to the triangle rule (or parallelogram rule) for the combination of forces, the resultant force F12 of forces F1 and F2 is equal to F3; by then combining F12 and F3, a resultant force in the direction of F3 with a magnitude of 2F3 is obtained.

Translated at 2026-07-31 13:06:44

Original: https://bbs.hcbbs.com/thread-2896854-1-1.html

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