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![[Post New]](/templates/default/images/icon_minipost_new.gif) 21 Apr 2008 20:35:16 IST
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2 forces P,Q act at such an angle that the resultant is P.Show that if P is doubled the new resultant is perpendicularto the force Q.
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In first case P^2 = P^2 + Q^2 +2PQcos@
Therefore cos@= -Q/(2P)
If P is doubled angle of resultant with Q is
taninverse(2Psin@/(Q+2Pcos@)) = pi/2 as dinominator is zero
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
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