## 花样滑冰跳跃动作中的力学原理1)

*北京理工大学宇航学院,北京 100081

## PRINCIPLES OF MECHANICS IN JUMP ACTION OF FIGURE SKATING1)

LIU Guangyan,*,2), CHENG Xiuyan*, LIU Haiyan*, BAI Ruoyang*, LI Hailong*, WU Xia, WANG Ning

*School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

China Media Group, Beijing 100020, China

 基金资助: 1)教育部第二批新工科研究与实践项目(E-SXWLHXLX20202602)

Received: 2022-02-16

Abstract

This paper interpreted the underlying principles of mechanics for the jump actions in figure skating competition in the 2022 Beijing Olympic Winter Games, using the theorem of momentum, the theorem of moment of momentum and the law of conservation of moment of momentum etc.

Keywords： figure skating; jump; theorem of momentum; theorem of moment of momentum; law of conservation of moment of momentum; moment of inertia

LIU Guangyan, CHENG Xiuyan, LIU Haiyan, BAI Ruoyang, LI Hailong, WU Xia, WANG Ning. PRINCIPLES OF MECHANICS IN JUMP ACTION OF FIGURE SKATING1). Mechanics in Engineering, 2022, 44(2): 466-469 DOI:10.6052/1000-0879-22-090

## 1 花样滑冰跳跃动作中的力学原理

### 1.2 起跳阶段

$mv_{z2} -mv_{z1} =I_{z}$

### 图1

$L_{z} =J_{z}\omega$

$\frac{{\rm d}L_{z} }{{\rm d}t}=M_{z}$

## 参考文献 原文顺序 文献年度倒序 文中引用次数倒序 被引期刊影响因子

Cui Aibo, Wang Kai, Qin Xiaojin.

Analysis of the jump action's angle speed in figure skating

China Winter Sports, 2007, 29(2):29-31 (in Chinese)

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How does a cat fall on its feet?

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A dynamical explanation of the falling cat phenomenon

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