What is impossible for a machine to do?

do a greater amount of work than the amount of work done on the machine
apply a force in a direction that is different than the direction of the force applied to the machine
move an object a greater distance than the distance that part of the machine was moved
apply a force that is less than the force that is applied to the machine

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)