國三上理化Chap3_4 簡單機械 2024 1105
Authored by Sone Wang
Physics
9th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
掃地用的掃把，其槓桿原理的利用為何？
省時省力
費時費力
省時費力
省力費時
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
一定滑輪之左側掛有一重50公斤重的物體，現於右側向下拉10公分，則物體的高度會上升多少公分？
5
10
20
50
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
若於附圖的A點處掛一個150公斤重的物體，則需於B點處向下施力多少公斤重才可達平衡？(摩擦力忽略不計)
50
75
100
150
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
如附圖的裝置中掛一個150公斤重的物體，則需於B點處向上施力多少公斤重才可達平衡？(滑輪重及摩擦力忽略不計)
50
75
100
150
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
若使用某輪軸可以25公斤重的力舉起100公斤重的重物，則輪軸半徑比為何？
4：1
1：4
16：1
1：16
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
下列何者為使用斜面可能達到之目的？
省時
省力
省功
費力
7.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
螺旋是下列哪一種機械裝置的變形？
槓桿
滑輪
斜面
輪軸
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