Adv Illustrations – A Man Managing Equilibrium of a Block | Newton's Laws of Motion #55 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 A Man Maging Equilibrium of a Block which is important for select in IIT.

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[tysonff]

For those who have come for the equilibrium sort of thing...
Questions means to say that its wrt to platform that means that if we see the person while standing on platform it appears stationary which eventually means that both the platform and the man are moving the same acceleration and in the same direction...
This is what I have interpreted....hope it's correct

[seemawarsi]

Torque should also be taken in consideration, it's not given that the length of the platform is very small compared to height of man.

[abhisheksahu]

Respected sir, man is in equilibrium then why have you considered acceleration of

Please help me

[mohammadbadar]

Hello Sir... I cant correlate the solution pf this problem with the solution of same question mentioned in Physics Galaxy Book Illustration Example 2.15

[oooo]

Why you have taken man + platform as system while in all other questions you have not taken this
And if you are considering man + platform as system then why you have not taken weight of plateform as force

[kuldeep]

thanks for the great explanation, I was confused by the figure that the mass 10 kg is of block or platform or both 10-10 kg .

[universalcosmologist]

Others arms of the string are also having acceleration
So why you taken only acceleration of few string segments

[anshur]

Sir why have you considered acceleration in this case

[five]

mass less body has no acceleration than how is platform accelerating with man /

[clown]

Sir, why did you take acceleration if it is given that the man is at rest on platform. Doesn’t this mean that the system is in equilibrium? Please Reply

[aryantiwari]

What will be the change in constraints equation if the plank would have mass

[darish]

The platform won't be applying Normal force?

[RaviSingh-beyc]

Why you not consider normal force between platform and man

[lonamisa]

Keep himself at rest ON platform = rest wrt platform