問題詳情
7. A piece of thin uniform wire of mass m and length 3b is bent into an equilateral triangle. Find themoment of inertia of the wire triangle about an axis perpendicular to the plane of the triangle andpassing through one of its vertices.
(A)2mb2/3
(B) 7mb2/4
(C) 1mb2/3
(D) 1mb2/4
(E) 1mb2/2.
參考答案
答案：E
難度：計算中-1
書單：沒有書單，新增