如图,用与竖直方向成30°角的力F将重为10N的物体推靠在竖直墙上,物体与墙的动 发布时间:2017-06-26 16:01 │ 来源:www.tikuol.com 题型:问答题 问题: 如图,用与竖直方向成30°角的力F将重为10N的物体推靠在竖直墙上,物体与墙的动摩擦因数μ=0.2,求当物体沿着墙匀速滑动时,推力F的大小是多少?
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