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Find force requires to pull block B as shown, Coefficient of friction between A and B is 0.3 and between B and floor is 0.25. Mass of A=40kg and B=60kg.

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FBD- Block A

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fx=00.3R1Tcos30=0(1)fy=0R1+Tsin30=40×9.81(2)

From equation (1) and (2)

R1=334.47NT=115.86N

FBD – Block B

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fy=0R2=R1+60×9.81=334.47+60×9.81R2=923.07Nfx=0P=0.3R1+0.25R2P=0.3×334.47+0.25×923.07P=331.108M

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