Phải tác dụng vào đầu bên trái một lực bao nhiêu để giữ cho thanh thăng bằng ?

Một trạm thu phí có một thanh chắn dài 12m có khối lượng 180kg và có trọng tâm ở cách đầu 5m. Hỏi phải tác dụng vào đầu bên trái một lực bao nhiêu để giữ cho thanh thăng bằng

Giúp mình nha đang cần gấp lắm Thank you

Theo dõi Vi phạm

Vật lý 6 Bài 30 Trắc nghiệm Vật lý 6 Bài 30 Giải bài tập Vật lý 6 Bài 30

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bởi phạm kiều khanh 08/11/2018

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