A 40-mm-thick plate was rolled down to 30 mm in one pass. The entrance speed was 16 m/min. Roll radius was 300 mm, and the mill was running at a speed of 18.5 m/min.. Determine:1. The minimum required coefficient of friction 2. The exit velocity, if the plate width increases by 2%3. Forward slip

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?