作力的图示是中考物理作图题要考查的一个重要知识点 .但由于种种原因 ,学生在作力的图示时往往出现各种各样的错误 .为此 ,提醒同学们作力的图示时要做到“六忌” .一、忌没有弄清对象例 1　如图 1所示 ,物体Ａ重 40牛 ,拉力Ｆ1 为 30牛 ,请用力的图示法将重物对地面的压力Ｆ The diagram of force is an important knowledge point to be examined in the physics drawing for the examination. However, due to various reasons, students often appear various mistakes in the graphical representation of force. To this end, the students are reminded to do their best. In the illustration, “6 taboos” should be used. 1. Avoid objects that are not clear Example 1 As shown in Figure 1, the object A weighs 40 cows, and the pull force F1 is 30 lbs. Please use a heavy pictorial method to place heavy objects on the ground. Pressure F