問題詳情
43.水平桌面上有一個原本靜止不動的木塊，分別以四種方式施力，如下圖所示。若圖中附有箭號的線段皆代表1kgw的力，木塊重為3kgw。施力後，乙圖的木塊仍然不動，其他三種施情況下，木塊均沿水平方向運動。在這四種情形下，木塊所受到的摩擦力大小不同，分別為 
，則下列關係何者最適當？ 
，則下列關係何者最適當？
參考答案
答案：A
難度：非常困難0
統計：A(0),B(0),C(1),D(1),E(0)
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