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匀变速直线运动

> 在粗糙水平面上静置一长木板B，B的质量为M=2㎏，长度L=3m，B右端距竖直墙0.32m。现有一小物块 A，质量为m=1㎏，以 =6m/s的速度从B左端水平地滑上B，如图所示。已知A、B间动摩擦因数为μ 1=0.5，B与水平面间动摩擦因数为μ 2=0.1，若B能与墙壁碰撞则立即停靠在墙边。取g=10m/s 2。试分析小物块 A能否碰墙。

问题：

发布时间：2024-09-13

在粗糙水平面上静置一长木板B，B的质量为M=2㎏，长度L=3m，B右端距竖直墙0.32m。现有一小物块 A，质量为m=1㎏，以 =6m/s的速度从B左端水平地滑上B，如图所示。已知A、B间动摩擦因数为μ ₁=0.5，B与水平面间动摩擦因数为μ ₂=0.1，若B能与墙壁碰撞则立即停靠在墙边。取g=10m/s ²。试分析小物块 A能否碰墙。

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