iTeachChem•4mo ago

Electrostats

I need to find centre of mass of the meni hemisphere. How to do that?

iTeachChem Helper•9/17/25, 2:11 PM

@Gyro Gearloose

iTeachChem Helper•9/17/25, 2:11 PM

Note for OP

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CorrodedCoffin•9/17/25, 2:18 PM

is alpha 6

CorrodedCoffin•9/17/25, 2:18 PM

without mass of charge particle u cant comment on com

CorrodedCoffin•9/17/25, 2:19 PM

if u ignore it then ofc its the geometric centre

CorrodedCoffin•9/17/25, 2:19 PM

of the entire sphere

PrasanOP•9/17/25, 2:21 PM

Yes alpha is 6

PrasanOP•9/17/25, 2:22 PM

Kese kara

CCorrodedCoffin if u ignore it then ofc its the geometric centre

PrasanOP•9/17/25, 2:22 PM

Nahi mei kehra, jo half hemispheres ha unke centre of masses ka distance

PrasanOP•9/17/25, 2:23 PM

@CorrodedCoffin

PPrasan Kese kara

CorrodedCoffin•9/17/25, 2:26 PM

F = A * pressure

PPrasan Nahi mei kehra, jo half hemispheres ha unke centre of masses ka distance

CorrodedCoffin•9/17/25, 2:26 PM

11th mein derive nahi kara tha

CorrodedCoffin•9/17/25, 2:26 PM

CorrodedCoffin•9/17/25, 2:27 PM

ring element leke

PrasanOP•9/17/25, 2:28 PM

Vo to hemisphere ka tha na

CorrodedCoffin•9/17/25, 2:29 PM

oh half hemisphere

CorrodedCoffin•9/17/25, 2:29 PM

CCorrodedCoffin F = A * pressure

PrasanOP•9/17/25, 2:29 PM

Electrostatic pressure se

PPrasan Electrostatic pressure se

CorrodedCoffin•9/17/25, 2:29 PM

yeh hemispherical sphere kya hai

PrasanOP•9/17/25, 2:30 PM

Dekh ek sphere ha

PrasanOP•9/17/25, 2:30 PM

Usko kata

CorrodedCoffin•9/17/25, 2:30 PM

meine toh 2 hemispheres maanke kara

PrasanOP•9/17/25, 2:30 PM

Jo hemisphere bana usko kaata

PrasanOP•9/17/25, 2:30 PM

Ab ye kaatke jo 2 quarter se bane ha, unki charge density ha sigma 1 and 2

CCorrodedCoffin meine toh 2 hemispheres maanke kara

CorrodedCoffin•9/17/25, 2:31 PM

pi r ^2 sigma 1 sigma 2 / 2 epsilon

CorrodedCoffin•9/17/25, 2:31 PM

ques ki lang ajeeb si hai

CCorrodedCoffin pi r ^2 sigma 1 sigma 2 / 2 epsilon

PrasanOP•9/17/25, 2:32 PM

Ye kara tha mene, usse 12 aaraha tha com vale method se

PrasanOP•9/17/25, 2:32 PM

Ruk bhejta hu

PrasanOP•9/17/25, 2:33 PM

rn_image_picker_lib_temp_52d4fa28-09a8-4fd1-85c8-c7755c9616c3.jpg

CorrodedCoffin•9/17/25, 2:36 PM

we can assume total charge on com always ?

PrasanOP•9/17/25, 3:53 PM

ig so

PrasanOP•9/17/25, 3:53 PM

@integralofe^2v

PPrasan @integralofe^2v

integralofe^2v•9/17/25, 4:35 PM

Idts u can write the entire charges on sphere as a single point charge, as the electric field due to both of these isnt same in center, instead try finding the electric field due to 1 hemisphere at center and multiply by charge to find force