如图所示，一个货箱静止在传送带上与传送带一起向上做匀速直线运动。请在图中画出货箱受力的示意图，图中黑点为货箱重心。_刷题宝

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如图所示，一个货箱静止在传送带上与传送带一起向上做匀速直线运动。请在图中画出货箱受力的示意图，图中黑点为货箱重心。

上一题下一题 0.0难度选择题更新时间:2019-08-21 03:46:06

答案(点此获取答案解析）

解：如图所示：

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