Two crates collected by a rope lie on a horizontal surface (Fig. 5.55). Crate A bas mass mA and crate B bas mass mB' the coefficient of kinetic friction between each crate and the surface is μt. The crates are pulled to the right at constant velocity by a horizontal force F. In terms of mA, mB, and μt calculate
(a) The magnitude of the force F and
(b) The tension in the rope connecting the blocks. Include the free-body diagram or diagrams you used to determine each answer.

B