The simplest machine for lifting is a class one lever. It takes human effort and multiplies it.
All other forms of lifting equipment replaces human effort with mechanical force generated by an engine of some form.
The two reasons why people use simple machines are because they make things easier to pull and lift.
You use simple machines to make work (moving things) easier.
To gain a mechanical advantage.To make things easier.
They help us by doing things that we can't do and make easier the things that we can do.
People use machines because they want to make their lives easier.
Machines were invented to make work easier.
Machines are designed to make work faster and easier. These machines do so by taking some of the manual work off of you.
to make work easier
its make our life easier
to make hard work easier for you
Do you mean "change"? If you're talking about "simple machines", the usual answers are direction (eg., with a pully), speed, and force.
You can move the fulcrum closer to the object you are trying to lift in order to make it easier to lift. This will increase the mechanical advantage of the lever, requiring less force to lift the object.