Three blocks (m1, m2, and m3) are sliding at a constant velocity across a rough surface as shown in the diagram above. The coefficient of kinetic friction between each block and the surface is μ. What would be the force of m1 on m2?
(A) (m2 + m3)gμ
(B) F – (m2 – m3)gμ
(C) (m1 + m2 + m3)gμ
(D) F (E) m1gμ – (m2 + m3)gμ
