wave phenomena problem

👨🏻‍🏫 學術台其他 - 科學

Atheist

2010-03-07 12:54 am

the question is in the following link:
http://i634.photobucket.com/albums/uu67/cosmos1328/pure/594633.jpg

更新1:

sorry, the link is as follow: http://i634.photobucket.com/albums/uu67/cosmos1328/1248576.jpg

更新2:

its a mc question (from past paper) hope someone could solve it =]

更新3:

but why doesn't the force acting on mass B is F/2 ?? I think each of the 2 springs is stretched by force F/2. what's wrong with me? plz tell me=]

回答 (1)

天同

2010-03-07 2:55 am

✔ 最佳答案

Option A.
When the force F is suddely removed, the two springs are still under stretched condition. Hence, mass B is subjected to a spring tension equals to F. But the net force on mass A is zero because the spring tensions on its left and right hand sides balance each other.

👍 0 👎 0

收錄日期: 2021-04-29 17:33:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100306000051KK01037

檢視 Wayback Machine 備份