本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified
[问答题]
Suppose a disk rotates at constant n a+fn.m:vf3p angular velocity. Does a point on tia-4cd b0ofj;l9uk:tn:s tt4 rg.xe /he rim have radial and/or tangential acceleration? If the disk’s angular velocity increases uniformly, does the point have radialbu:o cgxandke-i0 .4j:f9 ;s4rtl tt/ and/or tangential acceleration? For which cases would the magnitude of either component of linear acceleration change?
参考答案:
If
a disk rotates at constant angular velocity, a point on the rim has radial
acceleration only – no tangential acceleration.
If the disk’s angular velocity increases uniformly, the point will have
both radial and tangential acceleration.
If the disk rotates at constant angular velocity, neither component of
linear acceleration is changing – both radial and tangential acceleration are
constant. If the disk rotates with a
uniformly increasing angular velocity, then the radial acceleration is
changing, but the tangential acceleration is a constant non-zero value.
本题详细解析:
暂无
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Post time 2025-2-18 20:00:22