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國三上理化Chap3_4 簡單機械 2024 1105

Authored by Sone Wang

Physics

9th Grade

國三上理化Chap3_4 簡單機械 2024 1105
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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

Media Image

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

Media Image

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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