Estimate the roll force F, power, and the torque for AISI 1020 carbon-steel strip (AISI 1020 average yield = 323 MPa at the rolling temperature) that is 200 mm wide and 10 mm thick and rolled to a thickness of 7 mm. The roll radius is 200 mm, and it rotates at 200 rpm. (Hint: torque can be calculated by power/w).