如果标准的400米跑道的弯道是半圆形,最内圈的半径为36米,每条跑道宽1.2米,现在有六个跑道。问

2024-12-16 13:48:13
推荐回答(2个)
回答1:

如果标准的400米跑道的弯道是半圆形,最内圈的半径为36米,每条跑道宽1.2米,现在有六个跑道。问
1.第六条跑道的半圆形跑道半径是多少米?
第6道跑道的半圆形跑道半径:36+(6-1)*1.2=42米
2.若进行400米赛跑,第二道的运动员要比第一道的运动员起点约提前多少米?
进行400米赛跑,运动员第2道比第1道起跑线提前:[(2-1)*1.2-0.1]*2π=6.912米
3.6名运动员进行400米赛跑,怎样设置跑道的起跑线?
6名运动员进行400米赛跑采用梯形起跑线:
第1道起跑线与终点线重叠(共线)。
第2道比第1道提前6.912米
第3道比第2道提前(3-2)*1.2*2π=7.540米
第4道比第3道提前(3-2)*1.2*2π=7.540米
第5道比第4道提前(3-2)*1.2*2π=7.540米
第6道比第5道提前(3-2)*1.2*2π=7.540米

回答2:

1、36+1.2x(6-1)=42(米)
2、2x3.14x(36+1.2)-2x3,14x36=2x3,14x1.2=7,536(米)
3、每相邻的两道跑道的起跑点相隔7.536米。

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