Two crates connected by a rope lie on a horizontal surface. Crate A has mass m_{A}, and crate B has mass m_{B}. The coefficient of kinetic friction between each crate and the surface is μk. The crates are pulled to the right at constant velocity by a horizontal force F→. Draw one or more free-body diagrams to calculate the following in terms of m_{A}, m_{B}, and μk:

a) the magnitude of F→ and

b) the tension in the rope connecting the blocks.