Accelerometer on a rotating wheel- Net force calculation

In summary, the conversation discusses the use of two analog MEMS accelerometers, the ADXL337 and ADXL377, for measuring acceleration on a car's wheels. The maximum acceleration for the ADXL337 is +/- 3g and for the ADXL377 is +/- 200g. The maximum speed of the car is 140 KMPH and the wheel radius is 30 cm. The conversation also mentions the need to consider centrifugal force during rotational motion and the question of where to place both sensors along the wheel's radius. No specific equations are provided for solving this problem.
  • #1
bsnayak
1
0

Homework Statement



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.

Homework Equations

The Attempt at a Solution


I couldn't figure out a method for solving this problem.
 
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  • #2
No equations at all? Presumably you have studied centripetal acceleration?
 

1. What is an accelerometer and how does it work?

An accelerometer is a device that measures acceleration, which is the rate of change of velocity of an object. It works by using a mass attached to a spring, which moves in response to acceleration. The movement of the mass is then converted into an electrical signal that can be measured.

2. How does an accelerometer on a rotating wheel calculate net force?

An accelerometer on a rotating wheel measures the centripetal acceleration, which is the acceleration towards the center of the circle. This acceleration is caused by the net force acting on the wheel, which can be calculated using the equation F=ma, where F is the net force, m is the mass of the wheel, and a is the centripetal acceleration.

3. What factors can affect the accuracy of an accelerometer on a rotating wheel?

The accuracy of an accelerometer on a rotating wheel can be affected by factors such as the mass and distribution of the wheel, the sensitivity and precision of the accelerometer, and external forces such as friction and air resistance.

4. How is the data from an accelerometer on a rotating wheel used in scientific research?

The data from an accelerometer on a rotating wheel can be used to study the motion and forces acting on the wheel, which can provide insights into various scientific phenomena such as rotational dynamics, energy conservation, and the effects of external forces on rotating objects.

5. Can an accelerometer on a rotating wheel be used to measure other types of forces?

Yes, an accelerometer on a rotating wheel can be used to measure other types of forces, such as tangential acceleration and radial acceleration, by using different equations and calculations. However, the accuracy and limitations of the accelerometer must be taken into consideration when measuring different types of forces.

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