本题目来源于试卷: Physics Unit8: Rotational Motion,类别为 Generic Physics
[单选题]
In what circumstances can 54+)0dj oyq744b9lrynlyf emh , gf we)twlb/the angular velocity of system of particse ;jh93:q yskles change without any change in the system's q:; 3heks9jy sangular momentum?
A. This cannot happen under any circumstances.
B. This can happen if a net external force acts on the system's center of mass.
C. This can happen if the only forces acting are internal to the system.
D. This can happen if an external net torque is applied properly to the system.
参考答案: C
本题详细解析:
暂无
|