
簡單機械是非題02
Authored by 勁男 李
Science
6th Grade
Used 2+ times

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50 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
水龍頭、拔釘器和螺絲起子都是屬於輪軸的應用。
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
洗手時可以省力的轉開水龍頭,是運用輪軸原理。
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
使用輪軸時,在軸上施力會比在輪上施力省力。
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
當抗力臂和抗力固定時,槓桿的施力點如果距離支點愈遠,省力效果愈明顯。
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
當重物掛在輪上、施力在軸上時,輪軸中的輪半徑就是槓桿原理中的抗力臂。
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
在利用直尺模擬翹翹板中,當抗力和抗力臂固定,手指壓的位置離支點愈遠,所需的力就愈大。
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
運用槓桿原理抬重物時,當抗力及抗力點不變,施力點離支點愈遠,愈省力。
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