Which statement about simple machines is correct?(1 point)

Responses

Simple machines increase the amount of work done.
Simple machines increase the amount of work done.

Simple machines always increase the distance that force is applied to do work.
Simple machines always increase the distance that force is applied to do work.

Simple machines always reduce the force needed to do move a load.
Simple machines always reduce the force needed to do move a load.

Simple machines do not change the amount of work done.

1 answer

The correct statement about simple machines is:

Simple machines do not change the amount of work done.

This is because simple machines can change the direction of a force or allow work to be done more easily by reducing the required force, but they do not create energy or increase the total amount of work performed; the work input is equal to the work output, minus any losses due to friction or inefficiency.