Answer to ques no. 44

 

Acc to the question ,

             8g = F1 + F2

              N1 = N2

   Since   R1 = R2

 Therefore F1 = F2

             2F1 = 8g

              F1 = 40

 

Let us take torque about the point B, we will get N1 * 4 = 8g * 0.75

 

       N1 = ( 80 * 3 ) / ( 4 * 4 )

            = 15 N

 

Therefore ( F1^2 + N1^2 ) = R1 =  ( 40^2 + 15^2 )

                                   = 42.72

                                  = 43 N