Which of the following statements correctly defines a simple machine? a device
Answer Details
The statement that correctly defines a simple machine is: "a device with which work can be done easily".
A simple machine is a mechanical device that can change the magnitude or direction of a force, making it easier to perform work. Simple machines include the lever, pulley, wheel and axle, inclined plane, wedge, and screw. By using a simple machine, the force needed to perform a task can be reduced, but the distance through which that force must be applied is increased. This trade-off allows us to apply smaller forces over longer distances to accomplish tasks that would otherwise require much greater forces over shorter distances.