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iwannacrack_iit

plz help me

i have a conceptual problem in h.c verma pg 121

kindly give me the concept by which i can solve the problem by myself...

thank you .

ankitagg

since the four charges are of equal sign just draw the direction of forces ,(that will be away from that charge )

take the resultant of two vectors by parallelogram law of vector addition ;thier resultant willl be in the direction of third one

add them and get the answer.

if u have any problem in writing the forces then tell.

iwannacrack_iit

u r trying to tell me that firstly i have to take the resultant of two vectors and then since the resultant is in the direction of the third charge so they will get summed up...o.k

can you help me still ?

just give me the corresponding equations if you have?

thank you

rakhiagrawal

ankitagg has given very clear idea 4 the que. asked by u. & i think u have got the concept. only need the equations. these r as follows... let 4 charges r there at points p,q,r,s & we have 2 find force on p due to other 3 charges. the force due to q & s on p, F=KQ^2/R^2
AGAIN RESULTANT OF THESE 2 WIL B ACCORDING 2 PARALLELOGRAM LAW, ROOT2.F .......(1)
now force due to the charge r on p, F'= KQ^2/(ROOT2.R)^2......(2)

NOW NET FORCE= EQU 1+ EQU 2..... PUT THE VALUES OF Q & R AS GIVEN IN THE QUE.

HOPE U GOT IT.
CHEERS.....:)

iwannacrack_iit

thank you........thank you.....thank you...very much you both have just got a million blessings from me which may help you in ur future......
now i got the thing ...........
thank you rakhiagrawal and ankitagg............

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