問題詳情
1. Newton's law of gravitation states that there exists an attractive force between the planet and the sunof masses m and M, respectively. The magnitude of the force is written as F = GmM /r2, where r isthe distance of the planet from the sun, which is called the central force. The orbital motion of aparticle under a central force is always
(A)unbounded
(B) bounded
(C) confined to a plane
(D) None of these.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增