Physics, 09.11.2021 22:50, Annapetrik

Một cần trục có trọng lượng Q = 50 kN cẩu vật nặng có trọng lượng P = 10 kN như hình vẽ. Hãy xác định phản lực tại A và B

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Một cần trục có trọng lượng Q = 50 kN cẩu vật nặng có trọng lượng P = 10 kN như hình vẽ. Hãy xác đ...