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Homework Help: Accelerometer on a rotating wheel- Net force calculation

  1. Oct 12, 2015 #1
    1. The problem statement, all variables and given/known data

    I have two analog MEMS accelerometers ADXL337, ADXL377. The ADXL337 can measure acceleration upto +/- 3g (where g = gravitational acceleration) and ADXL377 can measure upto acceleration of +/- 200g. More than this much amount of acceleration, would create noise and random datas. I have to put them on the wheels of a car. The maximum speed at which the car can move 140 KMPH. Thewheel of radius 30 cm. At the centre of the wheel net force is zero. if we have to put both the sensors along its radius, what is the maximum position for placing both the sensors along its radius?

    The centrifugal force during rotational motion has to be considered.

    2. Relevant equations

    3. The attempt at a solution
    I couldn't figure out a method for solving this problem.
  2. jcsd
  3. Oct 12, 2015 #2


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    Science Advisor
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    Gold Member

    No equations at all? Presumably you have studied centripetal acceleration?
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