How can i find energy loss from acceleration vs time graph

AI Thread Summary
To determine energy loss from an acceleration vs. time graph obtained via an accelerometer during a drop test, one must first calculate the object's velocity just before impact. The discussion highlights the importance of understanding the type of energy lost, such as kinetic energy during impact or energy lost in bounces. It notes that during free fall, the accelerometer should read a constant acceleration equal to gravity until the moment of impact. Accurate readings can help in analyzing energy loss per bounce if the object rebounds. Understanding these factors is crucial for calculating energy loss effectively.
hemakorn
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I use accelerometer for find an acceleration vs time graph from drop test. how can i find energy loss from acceleration vs time graph

thank you
 
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hemakorn said:
I use accelerometer for find an acceleration vs time graph from drop test. how can i find energy loss from acceleration vs time graph

thank you
Welcome to the PF.

What energy was lost? In this drop test, are you just asking how you can calculate the velocity of the object as it started to impact the platform at the bottom of the drop test? Did the object bounce? If so, do you want to calculate the energy lost per bounce?
 
In a drop test the accelerometer reading during travel should, ignoring noise, remain at 1; or, a net difference vs gravity of 0 until the impact.
 

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