[解題] 國二理化 浮力
1.年級:國二
2.科目:理化
3.章節:浮力
4.題目:浮力觀念
5.想法:1. 浮力定理說 浮力 = 物在空氣中重 - 物在水中重
但浮體浮力 = 物在空氣中重
所以說浮體在水中的重量為零?
即若木塊重50gw 水杯 + 水重200gw
若把木塊丟入水中後再拿去秤上
則秤所顯示重為 200gw
這樣想法好像是錯的,請問我觀念哪裡錯了呢?
2.若有一物體全部沒入水中
但未沉澱在底部 是漂浮於液面下
則是以浮體浮力或是沉體浮力觀點解釋呢?
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