[建議] 滿懷感激地打梅竹也要算點物理題
題目如下:
A uniform stick d = 1 m long with a total mass of 207 g is suspended
vertically from a frictionless pivot at its top end. A wad of putty of mass
29 g is moving horizontally with speed v. It strikes and sticks to the stick
at a distance 0.75 m from the pivot so that it will rise to the horizontal
position. Compute minimum value of v.
翻譯:
有一材質均勻 長度1m 質量207g的棒子 以一端點為支點的方式 垂直懸吊著
有一團質量29g的泥土以速度v水平打過來 打在棒上距離支點0.75m的一點上
並使棒和泥土轉至水平 求v最小值
我們現在在教轉動 這題似乎是要考慮轉動動能的樣子
不過我已經算到快起笑了
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※ 編輯: flarecutter 來自: 128.95.26.33 (03/04 23:23)
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