3) A driver pushes on a brake pedal, which causes a piston in the 0.5 cm² pedal cylinder to exert
600 N on the brake fluid, displacing the piston 0.1 cm. At the same time, 4.5 cm² pistons in the
wheel cylinders expand, so the drum brakes stop the car. \"Hint: Don't worry about the number
of output cylinders. What are the (a) work input, (b) IMA, and (c) output force?