A bicycle. the rest are simple machines.
Bicycle
crowbar &seesaw
A see-saw is a type of lever. Levers are simple machines. When you put two or more simple machines together, you get a compound machine. == ==
A seesaw is a class one lever.
first class levers have fulcrum at center and load and effort at extremes, examples are seesaw and scissor.
a seesaw is a lever that is balenced on a fulcrum
They are all simple machines, all have a fulcrum, all are levers, all are human powered.
A seesaw is a lever balanced on a fulcrum.
A lever is a simple machine that changes the distance the force is applied over. It is helpful by since the force is applied over distance you can lift things. One example of this machine is a seesaw and a boat paddle. If we did not have this machine on a seesaw we would stay balance. Levers are devices that increase the force you use them with. Each lever has three main parts: the fulcrum, resistance arm, and effort arm.
Gear Stick Door handle Hammer Spannera crowbarScissors, wheelbarrows, scissors, teeter-totters (seesaws). A crowbar or pry bar is also a level in either direction, both of which also employ a wedge.
A fulcrum is a part of a simple machine, the lever. Without the fulcrum what is left of the simple machine can no longer increase the applied force and is no longer a simple machine.
a seesaw is a lever that is balenced on a fulcrum
When using position to balance two uneven weights, it is an example of a lever.