Based on the slope of ME/m vs. t for the falling ball, was the total mechanical

Question

Based on the slope of ME/m vs. t for the falling ball, was the total mechanical energy conserved in your experiment? Explain your statement.

0163 0.03311, 0.122 00.000 3.2 Linear Fit for VideoAnalysis | MEM MEM mY+b 3.0- m (Slope). 4.303 +-0.6155 b (Y-Intercept) 1.797 0.1482 Correlation: 0.9525 RMSE: 0.09972 2.8 2.6 2.4 0.15 0.20 0.25 0.30 Y (m) Linear Fit for VideoAnalysis | KEM m (Slope): 0.3399 0.5098 Correlation: 0.2857 | |b (Y-Intercept): 0.3572+/-0.2787 RMSE: 0.3942 0.0 0.2 0.4 0.6 0.8 Time (s)

Explanation / Answer

From both the ME/m Vs t curve it is clear that ME/m keeps changing with the time as its slope keeps changing, hence we can say that total ME doesn't remain conserved in this experiment. This may be due to air friction acting on the ball.

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