Challenging effective mass

It is known that the effective mass of the spring in this system is 1/3 of the mass of the spring 圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpaul/yahoo_knowledge/question/spring1.jpg and it is no effective mass of the spring in this... 顯示更多 It is known that the effective mass of the spring in this system is 1/3 of the mass of the spring


圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpaul/yahoo_knowledge/question/spring1.jpg


and it is no effective mass of the spring in this system


圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpaul/yahoo_knowledge/question/spring2.jpg



So, what is the effective mass of the spring in these systems? Explain in detail.

(a)


圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpaul/yahoo_knowledge/question/spring3.jpg


(b)


圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpaul/yahoo_knowledge/question/spring4.jpg


(c)


圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpaul/yahoo_knowledge/question/spring5.jpg
3 個解答 3