In this week’s lab we explored Newton’s Laws.
1. Newton’s 2nd Law i.e.,
2. The law of conservation of energy
3. Velocity and acceleration
4. Power
We used the Lego Mindstorm motor to lift weights with a pulley.
Setting the power level of the motor will set the toque on the motor wheel which will result in a particular force used to lift the masses. The higher the power level, the greater the force
1. Explore Newton’s 2nd Law i.e. by
a. Keeping the power level fixed and changing the mass. Does the acceleration vary withmass?
We found that by decreasing the mass (kg) while keeping the same power level, the time (s) and battery discharge (mV) decreases. However, the speed (RPM) and acceleration (RPM/s) increase.
b. Keep the mass fixed and change the power level. Does the acceleration vary with power level?
We found that decreasing the power level decreases the power level (mV), speed (RPM), and acceleration (RPM/s). However, the time (s) increases.
We measured the distance travelled with a ruler : 30 cm
Results from experiment:
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