一彈簧掛在天花板上,下端以 15 公斤重之力拉之,伸長 3 公分,若改以 30 公斤重之力拉之,彈簧伸長多少公分?【提示:伸長量與外力大小成正比】
20210603小考

Quiz
•
Physics
•
8th Grade
•
Hard
文宏 王
Used 3+ times
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10 questions
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1.
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1 min • 1 pt
2.
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1 min • 1 pt
一彈簧掛在天花板上,原長10公分,當下端以 15 公斤重之力拉之,伸長 3 公分,若改以 30 公斤重之力拉之,彈簧全長為多少公分?【提示:伸長量與外力大小成正比】
3.
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1 min • 1 pt
有一物體同時受到向東5公斤重,向西5公斤重,則其所受的外力合為多少公斤重?
4.
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1 min • 1 pt
有一物體同時受到向東5公斤重,向西10公斤重,則其所受的外力合為多少公斤重?(不含方向)
5.
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1 min • 1 pt
有一物體同時受到向上5公斤重,向下1公斤重,則其所受的外力合為多少公斤重?(不含方向)
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
有一物體同時受到向上5公斤重及1公斤重,則其所受的外力合為多少公斤重?(不含方向)
7.
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1 min • 1 pt
如右圖,若彈簧秤及鐵環皆為 1kgw,線的重量則忽略不計,若 W9=7kgw,W12= 4kgw,W13=5kgw,則:W1的讀數為多少公斤重?
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