Objective:

  1. Newton’s 2nd Law i.e. F=ma
  2. The law of conservation of energy
  3. Velocity and acceleration
  4. Power

http://web.cas.suffolk.edu/faculty/lshatz/Sustainability_class/Lab2_files/image004.jpg

Newton’s 2nd Law i.e. F=ma:

a) The acceleration does vary with mass.
b) The acceleration does vary with the power levels.

Mass (kg) Acceleration (rpm/s) Power Level (%) Acceleration (rpm/s)
0.25 40.869839 100 89.66584
0.2 42.477848 75 42.477848
0.15 47.462272 50 16.984233
0.1 65.160454 25 1.343651

Explore the Law of Conservation of Energy:

a) Computing Potential Energy = mgh

mgh (J)
0.6125
0.49
0.3675
0.245
0.49
0.49
0.49
0.49

b)

Mass (kg) Battery Discharge (MV)
0.25 111
0.2 69
0.15 13
0.1 41

The battery discharge increases as the mass increases.

Calculate the average power used by the motor:

Power Level (%) Power (watt)
100 0.343618513
75 0.730253353
50 0.150030618
25 0.040013065

As the Power Level increases the Power should increase as well. The slope is 0.006 and the intercept is -0.0568.

1 Comment on Force and Energy, Velocity and Acceleration, and Power

  1. fssako says:

    Does the time is important in this experiment ?

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