The force needed at one end of the lever to move the load at the other end of the lever depends on the distances to the pivot.
杠杆的一端所需要的、去移动另一端的东西的力，取决于与支点的距离。
2
All loading pads shall be capable of pivoting in relation to the direction of the applied force and the pivot point shall be as close as practically possible to the load surface.