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(上接第11期第41页)三、撬棍中的杠杆原理在建筑工地上和日常生活中,杠杆原理的应用处处可见,起重工人只要有一根撬棍在手,利用拨、撬、磨、拔等手法,就可以移动、提升、转动笨重的构件。利用杠杆原理的公式:重力×重力臂=力×力臂式中等号右边“力”是指所加的力。巧妙地加大力臂或缩小重力臂,可达到
(Continued from page 11, p. 41) Third, the leverage principle in the crowbar On the construction site and in daily life, the application of the principle of leverage can be seen everywhere, lifting workers as long as there is a crowbar in hand, the use of dial, pry, Grinding, pulling and other techniques, you can move, enhance, turn bulky components. Leverage the principle of leverage: Gravity × Gravity arm = Force × Arm Medium No. Right “force” refers to the added force. Cleverly increase the arm or reduce the gravity arm can be achieved