本题目来源于试卷: Physics Unit8: Rotational Motion，类别为 Generic Physics
[单选题]
An object's angular momentumpa3 tj*9r4asi47hdqh - q ov0j change,oa4: wwt x,hv1m p8lcrr/9oms by $20 \; kgm^{2}/s$ in 4.0 s. What magnitude average torque acted on this object?
A. $2.5 \; N \cdot m$
B. $5.0 \; N \cdot m$
C. $40 \; N \cdot m$
D. $80 \; N \cdot m$
参考答案: B
本题详细解析:
暂无
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Post time 2024-1-22 02:51:16