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2) Dividing the diameter of the follower, by the diameter of the driver.Gear Ratio =Diameter of follower (output)Diameter of driver (input)Gear Ratio =Diameter of follower (output)Diameter of driver (input)In this gear train the driver has adiameter of 18 cm while thefollower has a diameter of 6 cm.6Gear Ratio =18Gear Ratio = 1 : 3=1310
Big DriverSmall Driver11
Page 4: Pawl and ratchetA ratchet mechanism
Page 8 and 9: Meshed GearsThe diagram below shows
Page 12 and 13: ExercisesLook at the image on the l
Page 14 and 15: Gear ratios and simple gear trainsW
Page 16 and 17: What is the Gear ratios of these Ge
Page 18 and 19: a 20-tooth follower will turn three
Page 20 and 21: Working out revolutions per minute
Page 22 and 23: Working out revolutions per minute
Page 24 and 25: Question 1For every revolution of t
Page 26 and 27: BicyclesMany machines usegears. A v
Page 28 and 29: Highest gear: (downhill) is the lar
Page 30 and 31: Changing the angle of motionBevel g
Page 32 and 33: Movement of the rack & pinionNote:
Page 34 and 35: The Wheel Although they may seem ve
Page 36 and 37: To understand torque you need to kn
Page 38 and 39: Gear torque rules:Torque is a turni
Page 40 and 41: A simple gear train consists of two
Page 42 and 43: Mechanical AdvantageWhen two gears
Page 44 and 45: Question 1Look at the imageon the l
Page 46 and 47: Answers p 12:46
Page 54 and 55: 1. Bevel Gears:a. Have teeth parall

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