SirLancelotDuLac
IiTeachChem
•Created by hardcoreisdead on 4/27/2025 in #💭│doubts
Electrostats + shm
Then integrate.
14 replies
IiTeachChem
•Created by hardcoreisdead on 4/27/2025 in #💭│doubts
Electrostats + shm
Then take first order approximation
14 replies
IiTeachChem
•Created by hardcoreisdead on 4/27/2025 in #💭│doubts
Electrostats + shm
Okay. Well there would only be an imbalance of sin(alpha)+sin(beta) component and we would need to find alpha for a part of length r(dtheta) at an angle theta from a position
14 replies
IiTeachChem
•Created by hardcoreisdead on 4/27/2025 in #💭│doubts
Electrostats + shm
Otherwise the question becomes very hard (Maybe even elliptical integral, which doesn't have analytic solution)
14 replies
IiTeachChem
•Created by hardcoreisdead on 4/27/2025 in #💭│doubts
Electrostats + shm
Ig the question is trying to say line charge is displaced parallel to axis of ring
14 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/28/2025 in #💭│doubts
PnC/binomial, sum of choice function series
Hint: Start of by writing C0-C1+C2...=0
1. Write the above down and write C11=C9, C12=C8...C20=C0 and so on
2. Now what you have is 2(C0-C1+C2-...+C10)-C10=0. So 2S=C10
4 replies
IiTeachChem
•Created by hardcoreisdead on 4/27/2025 in #💭│doubts
Kinematics chase
Join each point with a line from the center. Then each point has some component of velocity perpendicular to this, which makes it rotate and one which pushes the point towards the center, making the shape smaller. At t=2a/v, find the length of the line joining center and point which will give separation between 2 points using geometry while also giving acceleration by v^2/r ig.
8 replies
IiTeachChem
•Created by cauchyschwartz on 4/25/2025 in #💭│doubts
binomial
It seems they asked for the summation of nC2/(n+1)!
11 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Properties of matter, film of liquid in ring
That is a 2 written badly. 😅 Because of the 2 layers of soap solution tension is 2T.l
9 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Properties of matter, film of liquid in ring
And then apply the formula for young's modulus.
9 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Properties of matter, film of liquid in ring
Consider the tension in a differential portion due to the surface tension Td(theta) which would be equal to 2*pi.rd(theta)
9 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Properties of matter, film of liquid in ring
9 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Mechanics, taut string
Yeah the impulse=mu not -mu (where u is final velocity)
51 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Mechanics, taut string
For upwards ball, J=mv-mu and for the bottom ball its mu=J so mu=mv-mu right? (Also J is magnitude of impulse here.)
51 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Mechanics, taut string
Ig its \newline I'm not sure tho
51 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Mechanics, taut string
1/2mv^2+1/2m(v^2/4+v^2/4)=3/4mv^2
51 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Mechanics, taut string
After each ball covers l distance the string becomes taut once again, and impulse from tension distributes velocity among 2 balls.
51 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Mechanics, taut string
51 replies
IiTeachChem
•Created by Nimboi [ping if answering] on 4/26/2025 in #💭│doubts
Mechanics, taut string
After some time the string becomes taught, as a result the velocity changes due to impulse
51 replies