Design a system that will control the traffic light of an intersection between a busy street (let’s call that main) and a less busy one (say, side street). normally, the light is red for the side street and green for main, but if a car sensor in the side street (e. g. car_side) is asserted high, a transition is triggered. the transition should be as follows:

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?