如图6-2所示,已知活塞直径d=100mm,长l=100mm气缸直径D=100.4mm,其间充满黏滞系数为0.1Pa·s的油,活塞以2m/s的速度运动时,...

作者: tihaiku 人气: - 评论: 0
问题 如图6-2所示,已知活塞直径d=100mm,长l=100mm气缸直径D=100.4mm,其间充满黏滞系数为0.1Pa·s的油,活塞以2m/s的速度运动时,需要的拉力F为( )N。
选项 A. 31.4 B. 314 C. 62.6 D. 15.7
答案 A
解析 提示:牛顿内摩擦定律

相关内容:如图,6-2所示,活塞,直径,气缸,100.4mm,黏滞,系数,的油,速度,运动

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