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两个可视为质点的,相同的木块A和B放在转盘上,两者用长为L的细绳连接,木块与转盘的最大静摩擦力均为各自重力的K培,A放在距离转轴L处,整个装置能绕通过转盘中心的转轴O1O2转动。开始时,绳恰好伸直但无弹力,现让该装置从静止开始转动,使角速度缓慢增大。以下为分析转盘转动过程中A、B所受静摩擦力及绳子拉力随角速度的变化情况。
Two can be regarded as a particle, the same piece of wood A and B on the turntable, the two are connected with a long string of L, the maximum static friction between the wooden block and the turntable are the respective K of K, A on From the axis of rotation L, the entire assembly can rotate about the axis O1O2 passing through the center of the turntable. At the beginning, the rope was straight but not elastic, now turning the unit from rest, causing the angular velocity to increase slowly. The following is the analysis of the turntable during the A, B by the static friction and rope tension with the angular velocity changes.