Adv Illustrations – Maximum Elongation in a Spring Attached to Two Blocks | WEP #24 for JEE Adv

Questions asked in JEE Advanced are based on critical thought processes rather than direct application of concepts. For preparation of JEE Advanced, students have to focus on problems based on multi concept applications.

Ashish Arora Sir has taken up a case of Maximum Elongation in a Spring Attached to Two Blocks which is important for select in IIT. Work Energy Power is chapter 6 of Class 11 NCERT and is crucial in JEE preparation. These advanced illustrations cover all formulas and relevant solved examples from Work Energy Power and are useful for making notes for IIT JEE preparation.

#jeeadvance #jeephysics #pg4AdvIllustrations #wep4jee #workenergypower #workpowerenergy

[xyZ-stry]

Sir in hcv they have given different derivation. There they have made equations wrt to center of mass.

[harshis]

Without use relative frame, we can do it by
1.) Write both the equations for F1 and F2
2.) Now we know that after some time their velocity will be equal but initially will be different, hence acceleration is different but velocity after some time will be equal
So replace a1 and a2 with vdv/dx[ limit (0, v) ] Now send dx to rhs and then solve it, now in both equations rhs will be equal and then easily it will be solved

[saianand]

sir,
how do I get access to the pg fundamental classes of work energy and power as it has not been uploaded In youtube...(under physics galaxy)

[shabanavideochannel]

After maximum elongation
Only spring apply same force on both blocks so velocity is same for
Correct me if i wrong 😊

[weirdo]

There is a typo in solution from 700 adv illustration book its written m1m2 rather m1+m2

[RahulPandey-rcin]

can this Q be solved from ground frame? without taking relative acceleration?

[isotroc]

sir i solved in the relative frame of m1 and then applied work energy theorem on block m2 which will eventually mean that positive work done by net force on m2 in the relative frame of m1 will be equal to the energy stored in spring at max elongation and then using this i found the max elonagation but its coming a bit different. sir can you please gibve me a hint where am i going wrong?

[vikasnarang]

Can this be done by combined mass concept

[vishalmishra]

Sir is max. Elongation of a spring always independent of frame?

[SoumilSahu]

Is it correct to solve the same problem using the concept of reduced mass and force f2 - f1 acing on it?

[sd]

Sir can I have access to booster classes now

[Future_iitian_]

Easier if we do by reduced mass concept

[pandyaakshat]

Cant we do it by cutting spring and
Individually calculating max elongation for each block applying pseudo force and then adding the max elongation of each block

[abhisheksahu]

Sir how do we solve using work energy theorem

[rohitdiwaker]

Can we say acceleration of both at Max elongation will be same? If yes \ no how?

[pra_bhat_]

Sir dimension match nhi kr rha...Length se

[aayushagrawal]

Sir if F1=F2 and m1=m2 then we can directly write lm=F/k but if we are putting it in that expression lm comes out to be 2F/k... How this posible sir please explain..

[DeepakKumar-gibh]

Doubt : which mass is greater is not mentioned in question why??

[avranilsaha]

Sir, why the relative speed is zero at maximum elongation?

[CEBMDAQUIB]

During max elongation shouldn't a1=a2