Physics, 18.06.2021 06:50 nanyckhadiarracom
Một vật nặng 223g đang nằm trên đường nằm ngang thì được kéo lên bởi lực 1,8N theo hướng hợp với phương ngang 30°. Biết hệ số ma sát giữa vật và mặt đường là 0,23 và gia tốc trọng trường là 10m/s2, lực ma sát tác dụng lên vật có độ lớn là:
Answers: 1
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Một vật nặng 223g đang nằm trên đường nằm ngang thì được kéo lên bởi lực 1,8N theo hướng hợp với phư...
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