Một xe tải A khối lượng 3 tấn, kéo một xe
tải B khối lượng 2 tấn bằng một dây nhẹ. Hệ số
ma...
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Physics, 18.10.2021 17:10 elisahr5633
Một xe tải A khối lượng 3 tấn, kéo một xe
tải B khối lượng 2 tấn bằng một dây nhẹ. Hệ số
ma sát giữa các bánh xe với mặt đường là 0,1.
Tính lực căng dây do xe A kéo xe B, biết chúng
chuyển động thẳng đều trên đường ngang.
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