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Vật rắn có trục quay cố định đi qua O, chịu tác dụng của các lực F1 , F2 như hình 3.30. Biết F1 = 15N; F2 = Hình 3.28 20N; = 150o ; = 120o ; OA = 20 cm; OB = 10 cm. Tính mômen quay của lực F1.
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Jul 21, 2023
Physics
college
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