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The coefficient of friction between 4kg and 5kg blocks is 0.2 and between 5kg blocks and ground is 0.1 respectively. Choose the correct statement :
  • a)
    Minimum force needed to cause system to move is 17N
  • b)
    Maximum acceleration of 4 kg block is 2 m/s2
  • c)
    When force is 4N static friction at all surfaces is 4N to keep system at rest
  • d)
    Slipping between 4kg and 5 kg blocks start when F is 17N
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The coefficient of friction between 4kgand 5kgblocks is 0.2 and betwee...
So block 'Q' is moving due to force while block 'P' due to friction.
Friction direction on both P + Q blocks as shown.

First block 'Q' will move and P will move with 'Q' so by FBD taking 'P' and 'Q' as system

When applied force is 4 N  then FBD

i.e., ap = aq = 0
kg block is moving due to friction and maximum friction force is 8 N
So acceleration 
Slipping will start at when Q has +ve acceleration equal to maximum acceleration of P i.e., 2 m/s2 

The correct answer is: Maximum acceleration of 4 kg block is 2 m/s2
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Most Upvoted Answer
The coefficient of friction between 4kgand 5kgblocks is 0.2 and betwee...
Frictional force between 4kg and 5kg =0.2*N=0.2*mg=0.2*4*10=8N
as we know that f=ma
a=f/m=8N/4kg=2m/sec^2
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Community Answer
The coefficient of friction between 4kgand 5kgblocks is 0.2 and betwee...
So block 'Q' is moving due to force while block 'P' due to friction.
Friction direction on both P + Q blocks as shown.

First block 'Q' will move and P will move with 'Q' so by FBD taking 'P' and 'Q' as system

When applied force is 4 N  then FBD

i.e., ap = aq = 0
kg block is moving due to friction and maximum friction force is 8 N
So acceleration 
Slipping will start at when Q has +ve acceleration equal to maximum acceleration of P i.e., 2 m/s2 

The correct answer is: Maximum acceleration of 4 kg block is 2 m/s2
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The coefficient of friction between 4kgand 5kgblocks is 0.2 and between 5kgblocks and ground is 0.1 respectively. Choose the correct statement :a)Minimum force needed to cause system to move is 17Nb)Maximum acceleration of 4kgblock is 2m/s2c)When force is 4Nstatic friction at all surfaces is 4Nto keep system at restd)Slipping between 4kgand 5kgblocks start whenFis 17NCorrect answer is option 'B'. Can you explain this answer?
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The coefficient of friction between 4kgand 5kgblocks is 0.2 and between 5kgblocks and ground is 0.1 respectively. Choose the correct statement :a)Minimum force needed to cause system to move is 17Nb)Maximum acceleration of 4kgblock is 2m/s2c)When force is 4Nstatic friction at all surfaces is 4Nto keep system at restd)Slipping between 4kgand 5kgblocks start whenFis 17NCorrect answer is option 'B'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about The coefficient of friction between 4kgand 5kgblocks is 0.2 and between 5kgblocks and ground is 0.1 respectively. Choose the correct statement :a)Minimum force needed to cause system to move is 17Nb)Maximum acceleration of 4kgblock is 2m/s2c)When force is 4Nstatic friction at all surfaces is 4Nto keep system at restd)Slipping between 4kgand 5kgblocks start whenFis 17NCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The coefficient of friction between 4kgand 5kgblocks is 0.2 and between 5kgblocks and ground is 0.1 respectively. Choose the correct statement :a)Minimum force needed to cause system to move is 17Nb)Maximum acceleration of 4kgblock is 2m/s2c)When force is 4Nstatic friction at all surfaces is 4Nto keep system at restd)Slipping between 4kgand 5kgblocks start whenFis 17NCorrect answer is option 'B'. Can you explain this answer?.
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