Question

Two blocks of masses m1=1kg and m2=2kg are connected by a non deformed light spring. They are lying on a rough horizontal table.The coefficient of friction between blocks and surface is 0.4.What minimum constant force F has to be applied in horizontal direction to the block of mass m1 in order to shift the other block?

Answer 1

@agent0smith

Answer 2

|dw:1458012634121:dw
The point at which block m2 moves will the static equilibrium of block m2
sum of Fx=0 to block m2
T-F2 = 0
T = F2
This suggests that T would be sufficient to move block m2
Sum of Fx=0 to block m1
F_H - T - F1 = 0
F_H = T + F1
T = F2
Horizontal force = F1 + F2