力的分解是力的等效处理方法之一.一个确定的力可以分解成无数对分力,但在实际应用中,须从分力的效果来分解. 1.将一个力进行一次分解例1 春天有许多人放风筝,会放风筝的人能让风筝静止在空中,如下的四幅图中,AB代表风筝面,OL代表风筝线,风向水平,风筝可能静止的是( ) Decomposition of force is one of the equivalent methods of force. A certain force can be decomposed into innumerable inward forces, but in practical applications, it must be decomposed from the effect of component forces. 1. Decompose a force once. Example 1 There are many people flying kites in the spring and people who fly kites can keep the kites still in the air. In the following four figures, AB stands for the kite surface, OL stands for the kite line, and the wind direction is horizontal. The kite may be still ()