Acceleration measurement

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What is  acceleration?

Change in velocity with time is called acceleration.And  distance travel with respect to time is called velocity. SI unit of acceleration is metre per second square (m/s2).

All acceleration measuring instrument or accelerometer convert acceleration to force by allowing it to act on a inertial mass.


As shown in the figure the mass is in housing connected with spring which has a constant k and damper or dashpot which has constant D.

When the body is move a distance Xi the displacement of the mass the in the direction of the motion is Xm.

And the relative displacement of spring and damper in the opposite direction of X0.

We can connect a potentiometer at X0 by measuring the change in resistance, we can measure acceleration.

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