Problem 1 - Flat Rolling (Found in Chapter 18) A 250-mm-wide strip with a thickness of 20 mm is fed through a rolling mill with two powered rolls, each of radius = 200 mm. The work thickness is to be reduced to 17 mm in one pass at a roll speed of 60 rev/min. The work material has a flow curve defined by K = 280 MPa and n = 0.14, and the coefficient of friction between the rolls and the work is assumed to be 0.14. Determine if the friction is sufficient to permit the rolling operation to be accomplished. If it is, calculate the a. roll force, b. torque, and C. power.