Rusty’s Auto Shop has a hydraulic lift in a garage. A car of mass 1808 kg is towed in and placed onto the lift. If the platform that the car is on has an area of 10 m^2 and the platform of the other side of the lift has an area of 0.2 m^2, what is the required force on the smaller platform to lift the car at a constant speed?

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.