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自锁现象,是一种非常奇特而富魅力的物理现象,它在生活中的应用也很多,如儿童滑梯的设计,螺纹的设计,锁舌的设计,千斤顶的设计等等.自锁现象指的是,当接触面上的压力与接触面成一定角度θ时,不管压力大小如何变化,都无法使物体发生运动的一种现象.自锁现象发生的条件是tanθ≥1/μ(θ为力与接触面的夹角,μ为接触面上的动摩擦因数),对应的状态是一种平衡状态.然而,在圆周运动等这类非平衡状态中,也存
Self-locking phenomenon, is a very strange and fascinating physical phenomenon, it is also used in many life, such as children’s slide design, thread design, bolt design, jack design, etc. Self-locking means Is that when the pressure on the contact surface and the contact surface at an angle θ, no matter how the pressure changes, can not make the object to exercise a phenomenon of self-locking phenomenon occurs when tanθ ≥ 1 / μ (θ is The angle between the force and the contact surface, μ is the dynamic friction coefficient at the contact surface), the corresponding state is an equilibrium state, however, in the non-equilibrium state such as circular motion,