作者Asce (Excalibur)
看板Physics
标题[题目] 静电学
时间Tue Sep 30 22:30:30 2008
[来源]Introduction to Electrodynamics/David J. Griffiths
[题目]:Find the net force that the southern hemisphere of
a uniformly chargerd sphere exerts on the northern
hemisphere. (Total charge:Q、Radius:R)
[瓶颈]我想不到适当的方法,是要用用球座标的三重积分吗?
如果是的话式子应该怎麽列啊?谢谢。
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.115.216.227
1F:→ Asce:帮帮我@@ 09/30 23:43
2F:推 digimaster:程隽的书好像有例题 10/01 01:54
3F:推 oolontea:把球切成圆盘、再切成圆环,会不会比较简单? 10/01 05:05
4F:→ Asce:此指的是球面?我不太确定 10/01 08:28
5F:推 oolontea:看起来是怎个半球 10/01 11:18
6F:推 nevinyrrals:先算force per unit volume,再做积分 10/01 14:22
7F:→ nevinyrrals:也可以用Maxwell Stress Tensor算 10/01 14:23