试题与答案

2009年花样滑冰世锦赛双人滑比赛中,张丹、张昊连续第二年获得亚军,如图所示.张

题型:计算题

题目:

2009年花样滑冰世锦赛双人滑比赛中,张丹、张昊连续第二年获得亚军,如图所示.张昊(男)以自己为转轴拉着张丹(女)做匀速圆周运动,转速为30 r/min.张丹的脚到转轴的距离为1.6 m.求:

(1)张丹做匀速圆周运动的角速度; 

(2)张丹的脚运动速度的大小.

答案:

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