SIMPLE MACHINES

LEVERS

• Is a bar that is free to pivot or turn about a fixed point
• The fix point on the lever is called the fulcrum
• The distance from the fulcrum to where the effort force is applied is called the effort arm
• The differences are based upon the positions of the effort force, resistance force, and fulcrum

PULLEYS

• A cable attached to the elevator is wrapped around a pulley allowing the elevator to be raised and lowered
• A pulley is a grooved wheel with a rope chain or cable running along the groove
• A fixed pulley is a modified first class lever
• The axle of the pulley acts as the fulcrum

WHEEL AXLE

• Is a machine consisting of two wheels of different sizes that rotate together
• They are on car, trucks, and tactors
• They have a hard wheel base called an Axle

INCLINED PLANE

• Is a ramp or slanted like plane
• Helps with lifting or going up thing in a wheelchair
• For fun some people skateboard

SCREW

• Is an inclined plane screw in an upward spiral
• As you turn the screw it threads through the hole
• Is also used to fixs stuff

WEDGE

• Are things that that u stick in to doors or wood
• Wedges help with spaceing
• They are fun to work with

THE END