Responses
They magnify the force being applied, thereby decreasing the work they can do with no extra energy exerted by the person using the machine.
They magnify the force being applied, thereby decreasing the work they can do with no extra energy exerted by the person using the machine.
They decrease the distance needed between a person and an object, allowing the person to apply more force and do more work.
They decrease the distance needed between a person and an object, allowing the person to apply more force and do more work.
They reduce the amount of force needed to move an object to do the same amount of work.
They reduce the amount of force needed to move an object to do the same amount of work.
They increase the distance over which a force is needed, doing more work with less force.
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The correct response is:
They reduce the amount of force needed to move an object to do the same amount of work.
Simple machines, such as levers, pulleys, and ramps, allow a person to apply less force over a greater distance to accomplish the same amount of work, making tasks easier to perform.
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