Physics-
General
Easy

Question

The resultant of a system of forces shown in figure is a force of 10 N parallel to given forces through R, where P R equals

  1. (2/5)R blank Q  
  2. (3/5)R blank Q  
  3. (2/3)R blank Q  
  4. (1/2)R blank Q    

The correct answer is: (2/3)R blank Q


    Equating the moments about R
    6 cross times P R equals 4 cross times R Q
    P R equals fraction numerator 4 over denominator 6 end fraction R Q equals fraction numerator 2 over denominator 3 end fraction R Q

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