Which of the following statements correctly defines a simple machine? a device

Assessment: WAEC SSCE - Physics - 2003 (Objective) Subject: Physics

Question 1 Report

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.
Read lesson note on Simple Machines (JAMB)
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