The other day we had an experiment on how different weights would affect the power, height, speed, acceleration, battery discharge, and time of our experiment.  These factors have a large influence in modern science and the lab proved that to me.

We first started off connecting weights to the pulley which told us all the information for the different segments of the lab.  Then, we had to connect the pulley to the battery so the battery can read all the information from the different runs we did for different weights.  The last thing we did to put the lab together was to connect the battery to the computer by a usb cord so the computer could relay the information from the battery on the screen.

We took down some data and found some interesting facts based on our results.    Whenever the mass of the weights decreased, the height, speed, and acceleration noticeably increased.  The height could have been my miscalculation by not stopping the power at the right time, but the other 2 were correct.  I believe this because When you take weight off of something running at the same power level (75%), it makes sense that the weights will accelerate faster every time, which also means it gets to the top of the pulley faster affecting the speed.

Another thing I noticed is that when the mass of the weights decreased, the time, MGH, and power all decreased as well.  I believe the calculations for time are correct because if you remove weights off the pulley at the same power level, it will rise to the top faster due to the speed of the pulley.  Also, I believe the MGH and power decreased because the less something weighs, the less energy/power it is going to use.

The last 2 topics to discuss are the gravity and battery discharge.  The gravity stayed the same at 9.8 because the pulley was the same height at all times.  However, the battery discharge scattered from 41 mV all the way up to 152 mV.  This leads me to believe that our calculations could have been a little off somewhere, however, everything else seems to make sense why it happened.

Summing it all up, it was an entertaining lab and I learned a few things i didn’t know before.  I could have guessed that the speed and acceleration would increase as the weight decreases but that is the only thing I really felt confident about.  It was a little confusing to figure out exactly what amount of weight was on there since I did not see any indications of the actual weight engraved on the weight itself.  Looking forward to the next energy lab and more ahead.  Buenos noches amigos.