
Y418 杠杆
Authored by KFC Science
Science
5th Grade
Used 2+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中杠杆的支点在哪里?
W
X
Y
Z
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
图中钓竿中的动力点在哪儿?
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下图显示弟弟在坐跷跷板。如果要将弟弟翘起来,哪里是动力点?
A
B
C
D
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
如果图中的工人要用更小的力来挑动大石头,他应该如何做?
将小石头拿掉
将铁棒换成木棒
用一只手来握着铁棒
握着铁棒的末端来出力
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
利用方法B来翘桶的盖子会比方法A省力.这是什么原因?
因为动力点离开支点比较远。
因为支点离开阻力点比较近。
因为没有动力点。
因为没有支点。
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
要保持重物的平衡,椅子放在哪一个点上最省力?
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
插图显示一个学生正要挑起一个箱子。如何能够用更小的力来挑起箱子?
拿掉一半的书本。
把铁棍换成木棍。
让书本尽量靠近箱子。
让书本尽量远离箱子
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