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Calculating torque

  1. Dec 12, 2012 #1
    A gearbox and flywheel with a output shaft rotating in the opposite direction to the input shaft at 5 times it's speed. The gearbox has an efficiency of 92%
    If the flywheel is solid has a mass of 50kg a diameter of 1.5m and is to accelerate from the rest to 300 revs min^-1 in 1minute

    Can someone please show me how to calculate torque required at the input shaft please
  2. jcsd
  3. Dec 12, 2012 #2


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    Hint: output torque = input torque / gear ratio
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