The system shown here is a simple hydraulic lift. By pushing down on piston A, you can create
upward force at piston B. If there is .300 kg of
mass on B, which has an area of .01 meters
squared. How much force on piston A will be
required hold the weight, if the area of piston A is
.0033 meters squared? (Don't forget the units in
your answer.)

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?