机械振动-1.振动现象与定义
Authored by 洪福孝Ang How
Physical Ed
10th - 12th Grade
Used 13+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物体在平衡位置附近做周期性的往返运动，此运动称为机械振动
正确
错误
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
产生简单的机械振动的条件有：（1）具有回复力（2）具有阻力
正确
错误
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水平放置的弹簧振子，在光滑的水平面上振动时，作为回复力的是：
弹簧的弹力
振子所受的重力
弹力与重力的合力
平面对振子支持力
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
竖直悬挂的弹簧振子在竖直面内做振动时，提供回复力的是：
弹簧的弹力
振子所受的重力
弹力与重力的合力
重力的切向分力
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
单摆的摆锤做圆弧运动时，提供的回复力是：
绳张力
重力
绳张力与重力的合力
重力的切向分力
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在振动的过程中，振子在平衡位置处所受的合外力=0N，因此此处必定没有外力
正确
错误
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