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Name _____________________________________________________ Class _______ Simple Machines Study Guide Define the words below using complete sentences. Simple Machine A device that makes work easier by changing the size or direction of the applied force Mechanical Advantage A number that tells how many times a machine multiplies force Output Force Work done by the machine on an object. Machine applies a force Input Force Force you apply to a machine through a distance Explain how you find the mechanical advantage of each machine. Screw Circumference / Pitch Lever Output Force / Input Force Inclined plane Length / Height Pulley Number of Segments Wheel and Axle Radius of Wheel / Radius of Axle Wedge Length / Greatest Thickness Explain what you learned in each of the labs listed below. Screw Lab You can increase MA by increasing length of inclined plane. This reduces the pitch Lever Lab To increase MA, move the fulcrum closer to the load side Inclined Plane Lab To increase MA you can increase length or ramp or decrease its height