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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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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.

User Pholz
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uh i need help bc i tooted and i need to go to the them
User Shubhamj
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