The Magic of Balance
平衡的魔法

73 Seconds
73 秒

Age 10-14
10-14 岁

Easy
简单

Forces
力学

Try It Yourself
自己动手试试

Materials
实验材料

Paper tube(纸筒)、two coins(两枚硬币)、support point(支撑点)

Steps
实验步骤

① Place the tube放好纸筒
② Add two coins放上两枚硬币
③ Adjust slowly慢慢调整
④ Find balance找到平衡点

Question
问题

Can two coins help a tube balance?
两枚硬币能帮助纸筒保持平衡吗?

Why?
为什么?

Center of Mass重心
Support Point支撑点
Balanced Forces受力平衡
Tube Stays Still纸筒保持稳定

Challenge
挑战一下

Can you balance it with only one coin?
你能只用一枚硬币让它保持平衡吗?

Real science
真实科学
Objects balance when their center of mass is above the support point.
当物体的重心位于支撑点上方时,它更容易保持平衡。

Downloads
学习资料下载

Student Worksheet
学生讲义