7. Two uniform cylinders have different masses and different rotational inertias. They simultaneously start from rest at the top of an inclined plane and roll without sliding down the plane. The cylinder that gets to the bottom first is:
(A) the one with the larger mass
(B) the one with the smaller mass
(C) the one with the larger rotational inertia
(D) the one with the smaller rotational inertia
(E) neither (they arrive together).

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統計: A(0), B(0), C(0), D(1), E(0) #3332066

詳解 (共 2 筆)

#7397453
所以解這題形狀才是決定滾動快慢因素
所以在往下滾時,會轉換成兩種型式的動能
分成平移動能和轉動動能
6a2429a441993.jpg
兩者都是均勻實心圓柱
所以都是一樣
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#6857471
1. 題目解析 在這個問題中,我們有兩...
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