Force felt by the accelerometer in a smartphone

[Edge5]

My smartphone has an accelerometer inside it. Does the phone itself and the proof mass of the accelerometer feel the same acceleration OR do they feel the same force, when I apply a force to my phone?

I think they feel the same acceleration, F=ma. Force felt by proof mass and the force felt by the smartphone should be different right? I think smartphone experiences less force then the proof mass of the accelerometer since it has a larger mass.

 

[A.T.]

I think they feel the same acceleration, F=ma. Force felt by proof mass and the force felt by the smartphone should be different right? I think smartphone experiences less force then the proof mass of the accelerometer since it has a larger mass.

Correct. But note that if the phone also rotates, then it gets more complicated.

 

[jbriggs444]

My smartphone has an accelerometer inside it. Does the phone itself and the proof mass of the accelerometer feel the same acceleration OR do they feel the same force, when I apply a force to my phone?

I think they feel the same acceleration, F=ma. Force felt by proof mass and the force felt by the smartphone should be different right? I think smartphone experiences less force then the proof mass of the accelerometer since it has a larger mass.

Since the smart phone contains the accelerometer and the accelerometer contains the proof mass, it is clear that the smart phone is more massive than the proof mass. Accordingly, it must be subject to a larger force in order to undergo an identical [or at least very similar] acceleration.

 

[Stephen Robert]

Actually Iphone is the first accelerometer Key feature. It helps to angle orientation of mobile phone