



Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place... The Space and Astronomy Agora 
Some Math To Start.
Forum List  Follow Ups  Post Message  Back to Thread Topics  In Response To Posted by Alexander on March 19, 2001 16:53:45 UTC 
Ok, suppose that Earth is moving (in orbital motion) with the speed v via Sun's atmosphere with the atmosphere density being D. Resistance force is F=dp/dt=m(dv/dt)+v(dm/dt), where dm is the mass of Sun's atmosphere being hit by orbiting Earth during time dt. Assuming slow spiraling (dv/dt=0), we get F=v(dm/dt)=vD(dV/dt)=vDS(dl/dt)=v2DS, where dV is volume of Sun's atmosphere being hit by Earth in dt time, S = Earth's crosssection.


Additional Information 

About Astronomy Net  Advertise on Astronomy Net  Contact & Comments  Privacy Policy 
Unless otherwise specified, web site content Copyright 19942023 John Huggins All Rights Reserved Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" are trademarks of John Huggins 