|
|
|
|
|
| Author |
Message |
![[Post New]](/templates/default/images/icon_minipost_new.gif) 21 Apr 2008 20:09:04 IST
|
|
|
resultant of 2forces P+Q,P-Q is[ ] (P2+3Q2).find the angle between 2 forces
|
WINNERS DON DO DIFFEREN THINGS THEY DO THINS DIFFERNLY
HATE MAN U, HATE ME
|
|
|
|
|
|
|
|
120..Use the fact that resultant of F1 and F2 is root(F12+F22+2F1F2cosx) where x is the angle between the forces.If u want soln,i'l post it.But u better try it first using the idea.
|
MaNuTd RoXxXx..MaNuTd 2 WiN PrEmIeR LeAgUe ThIs SeAsOn ToO AlOnG WiTh ChAmPiOnS LeAgUe.....HaiL RoNaLdO ...HaiL LaMpArD... |
this reply: 2 points
(with 0 
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
21 Apr 2008 20:27:59 IST
|
|
|
I tried with that even before but i could come only up to
3P2-Q2=2Q2cosx
|
WINNERS DON DO DIFFEREN THINGS THEY DO THINS DIFFERNLY
HATE MAN U, HATE ME
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
21 Apr 2008 20:32:27 IST
|
|
|
P2+3Q2=2(P2+Q2)+2(P2-Q2)cosx
P2-Q2 +2(P2-Q2)cosx=0
Thus,(P2-Q2)(1+2cosx)=0
Thus,cosx=-0.5
Thus,x=120
|
MaNuTd RoXxXx..MaNuTd 2 WiN PrEmIeR LeAgUe ThIs SeAsOn ToO AlOnG WiTh ChAmPiOnS LeAgUe.....HaiL RoNaLdO ...HaiL LaMpArD... |
this reply: 5 points
(with 1
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
|
|
|
|
|
Moderation Team
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
