A ruler is not typically considered a simple machine, as it does not fit into the traditional categories of simple machines such as levers, pulleys, or inclined planes. However, a ruler can be used in conjunction with other simple machines to measure and mark distances, which can aid in the application of mechanical principles. In this sense, a ruler can be seen as a tool that complements the function of simple machines rather than being classified as one itself.
A ruler
A pulley isn't a kind of simple machine, it is a simple machine
A train is not a simple machine.
A ruler is not considered a simple machine. Simple machines are typically mechanical devices that can be used to make work easier by changing the direction or magnitude of a force. A ruler is a tool used for measuring length or drawing straight lines.
IT's NOT A SIMPLE MACHINE!
its not a simple machine
It is a simple lever.
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
a compound machine is a combination of simple machines
lever
lever
It's a simple machine.