sat2 a bicycle wheel spins on its axis at a constant rate bu

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/13 23:21:58

sat2
a bicycle wheel spins on its axis at a constant rate but has not yet made a complete rotation .which of the following statements is correct?
a.the angular displacement is zero
b.the linear displacement is zero
c.the angular acceleraction is zero
d.the angular velocity is zero
e.none of these is zero
其它选项我都明白,但为什么选c?

因为at a constant rate...=angular acceleration is 0!
讨论角的问题跟一般的运动学问题一样,匀速直线运动,a=o

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