A motor that requires no energy input once it is running
A bulldozer!
Mechanical Advantage [achieved through levers or pulleys]
mechanical advantage
The related link describes it better than I. =============================
The machine level.
mechanical advantage
standardization is important because it helps to determine whether the machine is set and working properly or not.
operator's manual is usually a book that describes all ( or most) the off functions of a machine and what the operator (or driver) needs to know to use then and how to keep the machine maintained.
Friction reduces the mechanical advantage (IMA) of a simple machine by causing energy losses in the form of heat. As friction increases, the effectiveness of the machine in transmitting force or lift decreases, ultimately lowering the mechanical advantage.
It functions as a lever, with a fulcrum in the center.
Artillery and machine guns cause the armies to stay in defense position
An elevator has a weight limit of 350 pounds a box of machine parts weighs 25 pounds which inequality best describes the maximum number of boxes b that the elevator can hold