一个质量mA为4kg的木板A放在水平面C上,木板与水平面间的动摩擦因数u=0.24,木板右上端放着质量m B为1.0k的小物块B(视为质点),它们均处于静止状态,木板A 突然受到水平向右的瞬时冲量I=12N.s
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![一个质量mA为4kg的木板A放在水平面C上,木板与水平面间的动摩擦因数u=0.24,木板右上端放着质量m B为1.0k的小物块B(视为质点),它们均处于静止状态,木板A 突然受到水平向右的瞬时冲量I=12N.s](/uploads/image/z/2396565-45-5.jpg?t=%E4%B8%80%E4%B8%AA%E8%B4%A8%E9%87%8FmA%E4%B8%BA4kg%E7%9A%84%E6%9C%A8%E6%9D%BFA%E6%94%BE%E5%9C%A8%E6%B0%B4%E5%B9%B3%E9%9D%A2C%E4%B8%8A%2C%E6%9C%A8%E6%9D%BF%E4%B8%8E%E6%B0%B4%E5%B9%B3%E9%9D%A2%E9%97%B4%E7%9A%84%E5%8A%A8%E6%91%A9%E6%93%A6%E5%9B%A0%E6%95%B0u%3D0.24%2C%E6%9C%A8%E6%9D%BF%E5%8F%B3%E4%B8%8A%E7%AB%AF%E6%94%BE%E7%9D%80%E8%B4%A8%E9%87%8Fm+B%E4%B8%BA1.0k%E7%9A%84%E5%B0%8F%E7%89%A9%E5%9D%97B%EF%BC%88%E8%A7%86%E4%B8%BA%E8%B4%A8%E7%82%B9%EF%BC%89%2C%E5%AE%83%E4%BB%AC%E5%9D%87%E5%A4%84%E4%BA%8E%E9%9D%99%E6%AD%A2%E7%8A%B6%E6%80%81%2C%E6%9C%A8%E6%9D%BFA+%E7%AA%81%E7%84%B6%E5%8F%97%E5%88%B0%E6%B0%B4%E5%B9%B3%E5%90%91%E5%8F%B3%E7%9A%84%E7%9E%AC%E6%97%B6%E5%86%B2%E9%87%8FI%3D12N%EF%BC%8Es)
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