32 Replies
@Gyro Gearloose
Note for OP
+solved @user to close the thread when your doubt is solved. Mention the user who helped you solve the doubt. This will be added to their stats.you can consider the semicircular wire as a wire of length 2R totally legal
yes but how to approach it?
you first consider the wire then use dF=Bidx where b is the field due to infinite wire and integrate it
@trin
i wanna know by the theta method
If you take the arc and then find force the term dx cos(theta) will appear in integration and it is exactly equal to small change in horizontal direction
i got the expression i wanna know how to integrate it since i didnt come to that part in integration yet
@trin this approach is common in many sections of physics
I think you should wait for integration chapter for this method💀
I realized I have made the mistake of not taking components of force cuz one of them will be canceled out
The horizontal one to be precise will get canceled out
So sintheta is still left in the equation
nah idt theyll get cancelled out cause force is different
But you would have to integrate compo differently
I just in case usually do that to avoid getting wronged
But one of the integration will be trouble some so it is better to avoid it
instead of taking the theta with respet to the horizontal take the theta with respect to the vertical and integrate it from pi/2 to -pi/2
@trin horizontal one is getting canceled
I just solved y compo and it is the same as the original answer which means there is no x compo of force
there's a x compo
this is the x compo
lemme explain to you in a way like we consider this a wire of length 2R right?
and the force on that wire is only in the y direction
so therefore i think there should be no force x direction but i should probs try finding the x compo of force
as far as my teacher told theres a x compo
what did you use as limits
0 to pi
and when you substituted a term the limits became -infinity to infinity?
i guess ðŸ˜
idek whats happening
blud i legit just told you to integrate form -pi/2 to pi/2 and take theta at veritacl line instead of horizontal. In the final thingy the x componnents gets cancelled bro
Bro ko pta hai bro
kisko?
hi @trin we good with this?
nope but ill learn the whole integration and then try it out thanks 🙂
+solved @Niggil
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