[問題] 物理問題(功與能量)
不好意思 想請教一下
題目是這樣
有一理想彈簧,其彈力常數為k。將此彈簧至於水平成theta角
之光滑斜面的底部。有質量m之物體在斜面頂端由靜止滑下,
可將彈簧壓縮x距離,g為重力加速度,則
(1)物體在靜止前滑行之距離為多少?
(2)若物體與彈簧碰到後即黏在彈簧上,則物體作S.H.M之振福為若干?
我的算法是這樣
(1) mglsin(theta)=(1/2)kx^2
所以 l=(kx^2)/(2mgsin(theta))
(2) 第2小題好像是要用題目給之x去平衡時之x' 才會求出振福
不知這樣正確與否
有疑惑的地方是
為什麼這個x跟彈簧平衡時那個伸長量x'不同呢?
煩請大家解惑 謝謝
恩...我在上面把題目補完好了
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