Adv Illustrations – Sliding on a rough Plank on smooth surface | System of Particles #29 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 Sliding on a rough Plank on smooth surface from the chapter System of Particles which is important for select in IIT. System of Particles covered in Class 11 NCERT and is crucial in JEE preparation. These advanced illustrations cover all formulas and relevant solved examples from system of particles and are useful for making notes for IIT JEE preparation.

System of particles is one of the most critical sections of Mechanics in which questions are asked in JEE. This set of advanced illustrations covers questions on collision, compression in spring, center of mass, rocket ejection, elastic collision, coefficient of restitution, pendulum, potential energy, kinetic energy in collision cases, angle of divergence, bullet, displacement of center of mass, momentum, trolley cases, chain falling on a table. Questions have been asked on these concepts in previous years in JEE Mains, JEE Advanced and Olympiads.

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[alphaiitd]

Cant believe just took me two minutes to solve and its i guess a irodov question

[sumanag]

Can anyone sat that friction does work on only on plank body or mass m or both?

[nareshsir]

SIR MAYBE THIS COULD BE SILLY BUT THE FINAL EXPRESSION IS SOMEHOW MATCHING WITH THE REDUCED MASS TYPS SSO CAN YOU PLEASE TELL THAT IS THIER ANY RELATION ALSO CAN YOU MAKE A SESSSION ON USE OF REDUCED MASS AND WHAT IS REALLY IS .U USED IN SOME QUESTION BUT NEVER TOLD MUCH DETAILED

[vijayvyas]

Respected Sir how can we apply conservation of momentum here as friction is acting and it is an external force, so momentum should not be conserved. Please reply.

[sonamkaurkhurana]

Sir if we solve this problem using work energy equation then negative sign will not come??

[adarshchaturvedi]

if mu is given then can it be done this way,
u-mugt = mugt, to obtain time, then by distance formula sep, distances can be found, , then by F.s on both block and planc

[lakshyaguptaiitkgp]

Solved using ROHIT GUPTA sir PW siddhi in one step
1/2mu vapp^2

[harshvardhan]

Respected sir, I used work energy theorem to solve this problem, but I'm getting different value of final velocity
Can u please guide me where I am mistaken 🙏🙏