問題詳情
38. 將碗置於臉盆內的水中,內有一顆彈珠,如圖(十七)所示。當碗及彈珠在水面上呈現靜止狀態時,彈珠的重彈珠力施予碗底一個向下的作用力F,則下列何者為F的反作用力?
(A) 水作用於碗的浮力
(B)碗作用於彈珠的支撐力
(C)碗作用於彈珠的萬有引力
(D)彈珠作用於地球的萬有引力
參考答案
無參考答案
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