A rope with mass mr is attached to a block with massmb. The block rests on a frictionless horizontal surface. The rope does not stretch. The free end of the rope ispulled to the right with a horizontal force F. (a) Draw forcediagrams for the rope and the block, noting that the tension in therope is not uniform. (b) Find the acceleration of the system interms of mb, mr, and F. (c) Find the magnitude of the force the rope exerts on the block. (d) What happens to the force on the blick as hte rope's mass approacheszero? What can you state about the tension in a light cordjoining a pair of moving abjects?