Physics Question

I tried to make an original. Pretty decent as far as mains is concerned. Do try it. :grin:

It does NOT involve any integration. :face_with_hand_over_mouth:
Original

@Vasu_Kashiv @Gauri @Achyut_Singh @VictoryGod @Gaurav_Singh @Vladmirputin

8 Likes

Mains jaisa to nhi lgta… abhi thode time me try krta hu

#laveriginal 1 :sweat_smile:
Kaafi bdiya lg rha h

6 Likes

Yeah bro @Achyut_Singh We can add in it that the box is taken out (with assumption that no water enters while taking out) and then flipped. Then find the time taken to empty. Good one! :star_struck:

@Vasu_Kashiv (KTG + Fluid Mechanics) + Kinematics + Hints in question. :grin:

3 Likes

Accha bhai… fir toh seedha formula na lagagde?
Fir mera time = b^2 \over A (root 2b \over g) aarha hai… galat lag rha h ki aadhi values toh hai hi nhi isme :sweat_smile:

Accha fir toh galat hai mera kyuki maine bas A1V1=A2V2 use kiya h :sweat_smile:

3 Likes

Mera ek answer aaya h bhott ganda

I know shi nhi h…
Or my approach is right or not idk :sweat_smile:
Ye aya


I came to this nearly after 30 minites of try :grimacing::upside_down_face:(isse aage m haath jodta hu :pray:)

I equated pressure due to gas +pressure due to water (upto height h in box) =pressure at depth d :joy:
Then calculated h from this expression and put into t=root(2h/g) :laughing:
Aree isme to A use hi nhi hua :neutral_face: galat hi h fir to

3 Likes

Isko padhke dekho. Maine ye socha tha:

@Vasu_Kashiv @Achyut_Singh

4 Likes

Sorry bhai. Meri vajah se crucial time waste ho gaya. :pensive:
Abhi har second important h

2 Likes

Agr P air inside =P of water filled ke barabar hoga to indono ka sum P outside ko balance krlega?
Container fatt bhi skta h?

2 Likes

Aree nhi yrr aisa kuch nhi h :laughing:
Ek mistake to pta chl gi final volume of gas galat likhi mne :sneezing_face:

2 Likes

P air inside = P outside ko balance karega na?

Nitin sir se likhwake laya hu :joy::joy:
Screenshot_2021-02-15-22-58-22-44

3 Likes

Ye to wakai true h… Sir se confirm krke answer btana

2 Likes

3-4 jane telegram pe sab agree karte hh iss se.

Nitin Sir ne solution wala message dekha nahi abhi Tak.

2 Likes

Aur mai sochta hi nhi hun… kuch bhi kardeta hun :man_facepalming:
Thanks bhai
Prr bro equation of continiuty yaha par kyu nhi use kar sakte hai???


Ese kyu nahi kar sakte hain ? @ThirdJuly bhai

2 Likes

Idhar toh velocity of efflux height pe depend kar rahi hh. Upar wale question me hole box ke top pe hh toh velocity of efflux andar water level pe depend nahi karegi and hence usse direct torricelli se √2gd likh sakte hh coz pool bout bada hh and uski height me change na matra aayega and area bhi given nahi hh.

3 Likes

Par bhai maine toh ques hi change kar diya tha na ki box ko ulta kardo aur air me leaao…

Hnn :+1:

2 Likes

Haan fir tum jo keh rahe ho vo hi use karege. :+1:

Why didn’t they use i²R and used V²/R ?

I always get confused here…

1 Like

I mean P = V I and V = I R, use any combination of these two formulas and the answer you’ll get will be right just make sure that current gets divided into branches in parallel and voltage gets divided in series.

I used I^2R and got R = 8

5 Likes

Oh thanks got it

Try this OC one I tried to form:

A,B,C,D,E batana hh.

1 Like