Physics of gears puzzle

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In the picture shown below,
There are four gears with the following specification:-

  1. Gear A has 60 teeth
  2. Gear B has 40 teeth
  3. Gear C has 20 teeth
  4. Gear D has 60 teeth

Every minute, Gear B makes 15 complete turns.

What is the relative speed of Gear A and Gear B?Physics gear speed Puzzle

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  • 2 Answer(s)

    they both will rotate with same speed

    ABHIJAT Scholar Answered on 1st December 2015.
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    ANSWER- Both will rotate at same speed

    EXPLANATION-
    Gears of same size and teeth connected with any arrangement of gears, always rotates at same speed,
    So both the gears will rotate at same speed

    Detective Expert Answered on 1st December 2015.
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