#3 STRENGTH OF MATERIALS GUPTA AND GUPTA Error free Solution DFCCIL SSC JE RSMSSB JE UPSSSC JE SOM

[@ramindian2000]

150 ke baad ke Q. qu nahi upload kiye aapne

[@sanatanibairagibabadhaumi]

Q 115
Sir slove kia D⁴-d⁴/D⁴
Aaya

[@sanatanibairagibabadhaumi]

Q.115
STRAIN ENERGY DUE TO TORAION
U=T²/2GJ
U hollw=T²/2G Pie/32 (D⁴-d⁴)
U solid=T²/2G Pie/32 D⁴
Uhollw/Usolod=D⁴-d⁴/D⁴

[@mudasirrashid7674]

Exactly i was thinking same

[@civilscope5549]

Tm opposite likh diye ho bhai

[@augustyabhudev6595]

m2 thinking same but ye wala lga k bhi ans same aayega

[@Ankitabharti274]

Sir aag ka video nhi mil rha h

[@abhishekraaz9933]

Strength of materials kaa question v rattaa maarte hain.waah bhai😆🙏🙏

[@shubhamjangir8900]

Question No. 115
Sir,
Here asked strain energy ratio, Not strain energy per unit Volume...
We know that Strain energy stored due to torsion is..
U = Tθ*1/2...........1
From...
τ/R = T/J = Gθ/L........2
From eq. 1 and 2
U = 2τ²JL/GD²..........3
1.For Solid shaft
J = πD⁴/32
Which gives...
U = τ²/4G * π/4 *D²*L
= τ²/4G* Volume
2. For Hollow shaft..
J = π/32* (D⁴-d⁴)
Which gives..
U = τ²/4G * (D²+d²/D²) {π/4*(D²-d²) }*L
U = τ²/4G* (1+k²) *volume of hollow shaft.
So, Ratio of strain energy of hollow shaft to solid shaft..
U(h) /U(s) = {(D²+d²)/D²}{(D²-d²)/D²}
= (D⁴-d⁴) /D⁴...... Option C
Sir
Please check and verify... Thanks.

[@sanatanibairagibabadhaumi]

Yes bro 👍

[@bupsyvlogs5427]

Question 115 ka solution galat kiya ...
Isme volume include krne par D*4-d*4/D*4 aata hai

[@thandrider5325]

I doubt that you too haven't understood Q 122 and 123 well.

[@basantpandey2347]

117 ka d aara ans

[@suhirabanusaiyed2456]

Sir the number you have given is shown as Amit Singh on google pay. Is it still yours?

[@StudywithCivilbuddy]

Yes

[@civilscope5549]

Wah bhai mujhe jo v qstn me doubt the... Uske drct formula ratwa diye tum..😅😅😅...
113 ,115 explain nh kiya .. or v...😅😅

[@sameerhussain1130]

Sir Som kee next vedio aur upload karooo

[@Jitendra_82076]

Thank you sir❤

[@purushottamkumar6355]

A✅✔✔✔

[@aadilibrahimurs]

150.... onwards kha hai sir ⁉️

[@mudasirrashid7674]

QNo 115 mai hallow shaft ka voume kya hoga

[@mudasirrashid7674]

Hallow aur solid k avoume kasey smae hoga

[@dreamer1831]

I came here for solutions.. But ultimately I have to memorise the answers I have doubt in...

[@SunitaSaini-sf9io]

Thnku sir

[@28100098]

Sir please provide further question above 150

[@NehaSharma-zj9oo]

Next part abhi tk nii aaya h kya iska?

[@m.a4207]

Lack of concept!

[@shainkikumar903]

Next part.?