Forces Involved in an Electrical Motor According to Newton's Law

[nelson_qna]

Hi Everyone.

I've been trying to build an electrical motor and would like know the method to actually calculate the forces exerted on several parts in the motor according to Newton's laws. I've attached some pictures and drawings of the motor I'm trying to build. There are two scenarios that I've considered. Scenario 1 (Please see drawings Scenario 1) & Scenario 2 (Please see drawing Scenario 2)

Question 1 - "According to Drawing in Scenario 1"

Is my interpretation of all the forces involved in the motor correct according to Newton's Law? (Dismissing Friction Of Course)


Question 2 - "According to Drawing in Scenario 2"

In scenario 2 is all the forces involved in the drawing of scenario 2 correct and does it violets Newton's laws?

It feels wrong as 10N is acting on the 4 bolts in the + direction and 5N is acting on the pin (Q) in the - Direction. This 2 forces should be equal according to Newton's laws. If not there will be a nett force of -5N acting on the table. I just can't see how 10N of force is transferred from the permanent magnets to point Q where the bearing pivots.

Please Explain Thank You.

 

[zoobyshoe]

Why are the magnets labeled "10N magnet" and "5N magnet". What property of the magnets is 10 and 5 Newtons?

 

[nelson_qna]

The 10N & 5N are the forces acting against the magnet when the electromagnet is turned on.

 

[zoobyshoe]

The 10N & 5N are the forces acting against the magnet when the electromagnet is turned on.

Maybe I'm misunderstanding your diagram but it looks like in scenario 2 you have a 10N force acting against a 5N force. According to Newton's 3rd law, this is not something that could happen in nature. Both magnets have to be experiencing the same force.

 

[sardar]

Hello,

I can provide some information on the forces involved in an electrical motor according to Newton's Laws.

Firstly, it is important to understand that Newton's Laws of Motion are fundamental laws that describe the behavior of objects in motion. These laws apply to all types of motion, including the motion of objects within an electrical motor.

In Scenario 1, the forces involved are correct according to Newton's Laws. The motor is powered by an electrical current, which creates a magnetic field that interacts with the magnets on the rotor. This interaction creates a force that causes the rotor to rotate. The force acting on the rotor is equal to the force acting on the stator, as stated in Newton's Third Law.

In Scenario 2, the forces involved are also correct according to Newton's Laws. The 10N force acting on the bolts is equal and opposite to the 5N force acting on the pin (Q). This is in accordance with Newton's Third Law, which states that for every action, there is an equal and opposite reaction. The 10N force is transferred from the permanent magnets to point Q through the rotor, which is connected to the pin and bearing.

It is important to note that while the forces may seem unbalanced in this scenario, they are actually balanced within the system as a whole. The motor is designed to rotate, so the net force acting on the table is not relevant in this case.

In conclusion, the forces involved in an electrical motor are in accordance with Newton's Laws of Motion. The motor is a complex system that involves various forces, but they all follow the principles outlined by Newton's Laws. I hope this explanation helps you in your motor-building journey. Good luck!