Work in Relation to Bikes
PULLEYS
The bike uses many different types of simple machines to move and stop. The simple machine that makes it go is the pedals and gears, and the simple machine that makes it stop is the brakes.
Pedals and Gears: Pedals and gears are simple machines. The chain of a bike goes in a continuous circle around one big sprocket wheel and any one of five small sprocket wheels of different sizes. When the rider …
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…also stop things from moving. When you pedal a bike, you use your muscles to create a force. You are like the engine for your bike. You push the pedals in a circle to start a forward motion. When you squeeze the hand brakes, you are also exerting a force which stops the motion of your bike. Motion is another name for movement. Speeding motion up is called acceleration. Slowing down motion is called deceleration.
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