9:42 – Now, what makes the BO motor strong enough to keep moving even when touched?
Let’s understand that with an analogy. If you were to hit a sofa with your hands and a friend would hit the same sofa with a stick. Who do you think would dust the sofa well? Easy much? Your friend with the help of the stick leverages his strength.
11:10 – Similarly, the BO motor has gears attached to the motor. The addition of a gear head to a motor increases the torque output.
11:38 – What is Torque though?
Torque is the rotational power of a motor. In simpler words, Torque is a type of force that makes things move in angular instead of linear. It’s just the rotational equivalent of force. Example: What is applied to push a box from point a to b is force. What is applied to pedal a cycle is a torque.
Unit of torque: Newton–meter (N-m).
Formula of Torque: τ = r x F
That is the force times radius of the circle formed by the rotational force.
13:18 – The same principle of torque applies to cars too. Having learned about it now, In which gear does a car run the fastest?
The highest gear, be it the 4th or the 5th gear.
14:20 – In which gear the car can climb a slope efficiently?
The lowest gear, 1st or 2nd gear.
15:50 – What do gears look like?
17:15 – In cars, the first gear means less speed and more power
While the last gear means more speed and less power.
18: 03 – Same is the case with motors, BO motor with gears has more torque(power), hence less speed. But the DC motor which does not have gears has more speed and less power.
That was a pretty fruitful class, isn’t it? A class in electronics, physics, AND Driving!
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