What does the lever system do?

Answer 1

a lever system is a type of system in which people use to gain an advantage at doing something hard. There is three different type of classes. Class 1, class 2, and class 3.Class 1 is a class in which the load is on one side of the lever system, weighing down the effort. Maybe even more than what the effort can lift. The fulcrum is located right in the middle where the point of it is. Example:A door handle. The load is the thing that is pulling it down. The effort is at the tip ,at the door keeping it nailed into the door. Finally , the fulcrum is located in the middle. Class to is quite different. The load is located in the middle, then the fulcrum on either end, and the effort on the other end.Example: a wheelbarrow. The load can be the rocks someone is lifting from a place. Then the effort is the person lifting it and lugging it across land. The fulcrum is the wheel.With class three the effort and load are switched around from class 2. Class three has the effort located in the middle with the load on either side, and the fulcrum. Example:tongs. The the load is in the middle, say containing meat. Then the effort is towards the two tips, pushing the tongs down to keep in the meat without it falling out. The fulcrum is the tip at the end where the two pieces of metal were welded together.