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uygurjAlAp rizwAn

你好,不清楚你的题,建议你了解物理知识 3.杠杆平衡的条件:动力×动力臂=阻力×阻力臂.或写作:F1L1=F2L2 或写成 。这个平衡条件也就是阿基米德发现的杠杆原理。 4.三种杠杆: (1)省力杠杆:L1>L2,平衡时F1

Whom sad and withered grass? Grass fortunes year after year, Wing Fat grass is Qian dance Yiyi,

maga hay kot.imansiz uygur kapir.bundak yaxiguqa olsag bolmamdu.hanzularnig aldida satlaxmay.nomussiz haywan

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