# What is the best method for electromagnetic propulsion?

• Sameh soliman
In summary, an electric motor is the best option for this task because it requires the least amount of energy to move the weight.

#### Sameh soliman

I mean by the best the one that use the least energy to produce the grater force capable of carrying weights .

Say you have a pulley attached to a ceiling with height of 3 meters, around the pulley is a string that attached to a 30 kg weight and on the other side of the string you want to use electromagnetic propulsion to lift the weight up ... What method will you use and how much power will it use ?

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You would need to specify what sort of forces and weights are involved. Things like this don't easily scale for different sizes - take a slot racing car and a F1 style electric car. An electromagnetic engine that's suitable for one purpose may be hopeless for another purpose.

Sameh soliman said:
I mean by the best the one that use the least energy to produce the grater force capable of carrying weights .
As long as you can run tracks where you want to go...

https://en.wikipedia.org/wiki/Maglev

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We need more detail to answer.

To propel a space probe, an ion thruster is used.

To propel a race car, an electric motor is used.

To propel protons in an accelerator, magnets are used.

Edit: Are you working on a SF story?

russ_watters
anorlunda said:
We need more detail to answer.

To propel a space probe, an ion thruster is used.

To propel a race car, an electric motor is used.

To propel protons in an accelerator, magnets are used.

Edit: Are you working on a SF story?

OK... I wasn't clear at all

Say you have a pulley attached to a ceiling with height of 3 meters, around the pulley is a string that attached to a 30 kg weight and on the other side of the string you want to use electromagnetic propulsion to lift the weight up ... What method will you use and how much power will it use ?

How about winding the string around the shaft of an electric motor? Does an electric motor qualify as "electromagnetic propulsion"?

russ_watters and Dale
Sameh soliman said:
Say you have a pulley attached to a ceiling with height of 3 meters, around the pulley is a string that attached to a 30 kg weight and on the other side of the string you want to use electromagnetic propulsion to lift the weight up ... What method will you use and how much power will it use ?
I would use an electric motor. Power requirements depend on how fast you want it raised. The formula is P=mgh/t and you will want to make it larger to account for friction in the pulley

Edit: beat by @phyzguy !

An ordinary electric motor is the best option.

It will take 3*30 kg*m or 883 n*m or 883 joules of energy to lift neglecting friction.

Can you do the rest? Do you know what a joule is? a watt?

anorlunda said:
An ordinary electric motor is the best option.

It will take 3*30 kg*m or 883 n*m or 883 joules of energy to lift neglecting friction.

Can you do the rest? Do you know what a joule is? a watt?
That will do it ... Thanks

berkeman

## 1. What is electromagnetic propulsion?

Electromagnetic propulsion is a method of propelling objects through the use of electromagnetic fields. It involves the generation of a strong magnetic field and the interaction between this field and electrically charged particles, such as ions, to create thrust.

## 2. How does electromagnetic propulsion work?

Electromagnetic propulsion works by using a magnetic field to accelerate charged particles, such as ions, and then expelling them out of the back of the propulsion system to create thrust. This thrust is what propels the object forward.

## 3. What are the advantages of electromagnetic propulsion?

One of the main advantages of electromagnetic propulsion is that it does not require any propellant, making it more efficient and environmentally friendly compared to traditional propulsion methods. It also has the potential to reach higher speeds and can be used in a vacuum, making it ideal for space travel.

## 4. What are the limitations of electromagnetic propulsion?

One limitation of electromagnetic propulsion is that it currently requires a large amount of energy to generate the necessary magnetic fields. This can make it impractical for use in smaller objects or for long-distance travel. Additionally, the technology is still in its early stages and more research and development is needed to make it a viable option for mainstream use.

## 5. What are some current applications of electromagnetic propulsion?

Electromagnetic propulsion is currently being used in some experimental space propulsion systems, such as ion thrusters. It is also being explored as a potential method for launching spacecraft into orbit and for propelling high-speed trains. However, it is not yet widely used in commercial applications and is still primarily in the research and development stage.