一质量为10Kg的物体在水平面上向右运动,此时又有一个向左的力F=20N,问此时它所受的合力
一质量为10Kg的物体在水平面上向右运动,此时又有一个向左的力F=20N,问此时它所受的合力
匀速向右 不好意思 还有摩擦因数0.2
匀速向右 不好意思 还有摩擦因数0.2
物理人气:321 ℃时间:2019-08-25 05:44:56
优质解答
因为物体重10kg,且摩擦因数0.2,所以在运动过程中地面给物体的摩擦力为20N.然后做受力分析,物体开始做水平面上向右的匀速运动,则收到20N的牵引力和20N的摩擦力,当给它一个向左的力F=20N时,它就只剩下向左的20N的
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