#how to do

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ashen forum
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how to do two/ three block problems in NLM. is there any proper sequence or smthing to be followed .? constantly messing up these

frank willowBOT
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Note for OP

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gaunt rivet
ashen forum
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these type

image.png
gaunt rivet
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Ah, friction

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Wait. I have notes for this. Hopefully

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This is the case where friction with floor is zero.

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But the algorithm remains the same

sharp holly
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eduniti also has a great video on two-block problems, look it up

rustic yew
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Some helping points ig:

  1. Friction can at maximum stop relative motion
  2. It will 'try its best' to stop relative motion (In the sense, look locally to spot relative slipping tendency)
  3. Rest is just force balancing stuff but sometimes casework maybe needed.
ashen forum
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hmm i try to follow a similar seq
in the above ques i considered no slipping so accn = (40-9)/9 = 3.44

in fbd of 4kg 40-f = 4*a
this gives f= 26.3 which is less than limiting friction of 4kg ( 32N) i.e no slipping follows

this would mean a 26.3N force acts in backward dirn of 4kg and forward on 5kg
now, 26.3 - f2 = 5*a
this gives f2= 9.07 , which is slightly more than limiting friction of 5kg block ( 9N )

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is this correct ?

mild bison
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"friction chahata hai ki 2 body contact me rahe,uske liye friction tabhi lagega jab jarurat ho, utna hi lagega jitne ki jarurat ho aur wahin lagegaa jahan jarurat ho"
Thoda cringe ya weird lines ho sakti but kaam ki baaten hai

ashen forum
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yeah kinda followed the same principle