Denver's mile high football stadium in-corporates a system by which a section of stands can be moved to accommodate dif-ferent sports on the field. the grandstand, which has a mass of 4 x 106 kg, can be moved a distance of 45 m on a thin film of water. the movable grandstand rests on 46 bearing pads that are each 1.22 m in di-ameter. water at high pressure is pumped into each of the pads until the stands are lifted a vertical distance of 3.8 cm. excess water forms a lubricating film over which the grandstand is moved. the force required to move the stands is approximately 4.45 n per 450 kg of staduym mass. calculate the following: a. the pressure of the water under each bearing padb. the power of the motor required to move the grandstands over the distance of 45 m if the job takes 1 h. c. the work required to raise the grandstand 3.8 cm. force-displacement workw12=∫_1^2▒〖fs ds〗 force-displacement work w= fsv pdv force-displacement powerw12=∫_1^2▒〖pdv〗pdv work (piston) w=pav pdv power