
3-4簡單機械2
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Medium
夏志鍊 夏
Used 7+ times
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11 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
定滑輪的功能
改變施力方向
省力
省時
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
在定滑輪一側下拉50公分的距離
物體會
上升50公分
上升25公分
下降50公分
下降25公分
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
在定滑輪一側施力
以等速度拉動1個10公斤重的物體
若下拉2公尺
施力作多少功?(1公斤重=10牛頓)
20焦耳
200焦耳
10焦耳
100焦耳
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
承上題,物體獲得多少焦耳的位能?
20焦耳
200焦耳
10焦耳
100焦耳
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
在動滑輪下方吊一10公斤重的物體
最少要施多大的大才能拉起此物體
10公斤重
1公斤重
5公斤重
20公斤重
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
在動滑輪下方吊一10公斤重的物體
若施力上拉50公分
物體將上升
50公分
100公分
25公分
10公分
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
在動滑輪下方吊一10公斤重的物體
若施力等速度上拉2公尺
則施力作多少功?
(1公斤重=10牛頓)
(提示:W=FxS)
50焦耳
100焦耳
25焦耳
10焦耳
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