# Investigating The Effect Of Different Masses Hoisted By An Electric Motor

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Abstract (Kaley Barnes and Isabelle Cunis): Using an electric motor, an experiment was performed to test the efficiency of the motor when the mass being lifted was increased in increments of ten grams. As the mass increased by each increment of ten grams, the motor efficiency decreased by an average of 7.439%. Our results were found by using the equation: efficiency=gain in potential differenceelectrical energy used Therefore, this inverse relationship proved mass affects the efficiency of electric motors.

Introduction ( Jackson Cates and Aidan Rogers):
The purpose of this experiment was to investigate the effects of different masses hoisted by an electric motor from ground level to a height of 1.29 m. The main purpose was to look how a change in mass affected the efficiency of our motor, but it did affect other variables such as power, current, force, etc. For this experiment, our hypnosis is that as mass increases, the efficiency increases. Because in the equation for efficiency, efficiency=gain in potential differenceelectrical energy used, gain in potential difference = mgh, the mass of an object has a direct relationship with the efficiency of the motor. In this equation, we see that efficiency is affected by the mass that is lifted, gravity, the height the mass is being lifted, and the amount of energy that is put into the system. We can see that mass, gravity, and height has a direct relationship while inputted power has an inverse relationship with efficiency.