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An airbrake is a device using air resistance (air friction) to slow down an object. An airbrake is a very efficient way of braking, which is why it can be found in devices such as trains, lifts, hoists, etc. THE TASK The task is to investigate what effects the degree of braking, how your chosen factor(s) is/are related and why you think it/they effect the braking in this/these way(s). METHOD The air brake was made up using a knitting needle, glass tubing, a cork with slits, and 8 (8cm x 3cm) cardboard blades. As you can see in the diagram below, the knitting needle acts as an axle, which allows the glass tube to move freely. To the glass tube we attached a string which was 185cm long. At the other end of the string we attached a hook which could hold the weights and act as the lever. Finally we attached the...

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