Physics-
General
Easy

Question

In the shown situation, which of the following is/are possible ?

  1. Spring force = 52 N, if F subscript 1 end subscript= 40 and F subscript 2 end subscript = 60 N    
  2. Spring force = 52 N, if F subscript 1 end subscript = 60 and F subscript 2 end subscript = 40 N    
  3. Spring force = 0, if F subscript 1 end subscript = F subscript 2 end subscript = 100 N    
  4. Spring force ¹0, if F subscript 1 end subscript = 0.2 N and F subscript 2 end subscript = 0.3 N    

The correct answer is: Spring force = 52 N, if F subscript 1 end subscript= 40 and F subscript 2 end subscript = 60 N


    If F1 ¹ F2 , then system will move with acceleration so spring force ¹0
    If F1 = 40 N & F2 = 60 N then a equals fraction numerator F subscript 2 end subscript minus F subscript 1 end subscript over denominator m subscript 1 end subscript plus m subscript 2 end subscript end fraction equals fraction numerator 20 over denominator 100 end fraction equals fraction numerator 1 over denominator 5 end fraction m divided by s to the power of 2 end exponentand spring force F1 + m1 a = 40 plus fraction numerator 1 over denominator 5 end fraction (60) = 52 N
    If F1 = 60 N & F2 = 40 N then spring force = 52 N

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