How Much Power Is Needed to Lift a 1kg Object to 1 Meter?

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SUMMARY

The discussion centers on calculating the power required to lift a 1 kg object to a height of 1 meter using an electromagnet. Participants clarify that the problem involves maintaining the object's height against gravity, which requires understanding the relationship between power, force, and time. The power is defined as Joules per second, but the lack of specific details about the electromagnet's characteristics and the object's material complicates the calculation. Ultimately, the consensus is that achieving this task with a standard electromagnet is likely impractical.

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OP warned about not having an attempt at a solution

Homework Statement


How much power is required to lift the object A from the base B to a height of 1 meter if the given object A weighs 1 kilogram?

Homework Equations


No idea

The Attempt at a Solution


N/A very very confused what to do about this question..
 

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Nibesh sharma said:

Homework Equations


No idea

The Attempt at a Solution


N/A very very confused what to do about this question..
That's something you are supposed to avoid.
https://www.physicsforums.com/showthread.php?t=686781
You are asked to lift an object using an electromagnet. Is object A a permanent magnet? Please state the complete problem clearly.
 
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Surely you can find relevant equations. Also, are you sure that the problem statement is correct: you are asked to calculate the power?
 
cnh1995 said:
That's something you are supposed to avoid.
https://www.physicsforums.com/showthread.php?t=686781
You are asked to lift an object using an electromagnet. Is object A a permanent magnet? Please state the complete problem clearly.
Assume object A is magnetic material having same pole of the electromagnet's surface it's exposed to.
 
DrClaude said:
Surely you can find relevant equations. Also, are you sure that the problem statement is correct: you are asked to calculate the power?
Yes calculate the power required if the object A is a magnetic material and it is facing the electromagnet with like poles exposed towards the magnet
 
Nibesh sharma said:
Yes calculate the power
Power is Joules/second. There is no mention of time in your problem.
 
cnh1995 said:
Power is Joules/second. There is no mention of time in your problem.
The problem is now clearer. It is no the power to lift, but to maintain the height against gravity.
 
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DrClaude said:
The problem is now clearer. It is no the power to lift, but to maintain the height against gravity.
Right! I was about to delete that but I can't..
 
cnh1995 said:
Power is Joules/second. There is no mention of time in your problem.
Okay take it this way then... How many watts is it going to take for the electromagnet(if you need to know anything about the specs of magnet just ask) to complete the task?
 
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Nibesh sharma said:
Now the solution would be?
As I posted in your other thread, this is not the way things work here. You have to put in some effort.

I think that your problem is way underdefined. We have no idea what material the hovering object is made of, are any characteristic of the electromagnet.
 
  • #11
Okay
DrClaude said:
As I posted in your other thread, this is not the way things work here. You have to put in some effort.

I think that your problem is way underdefined. We have no idea what material the hovering object is made of, are any characteristic of the electromagnet.
okay, the time is 1 sec and the electromagnet's specs is what I'm Trynna figure out here... I want to know what the electromagnets power output should be..
 
  • #12
DrClaude said:
As I posted in your other thread, this is not the way things work here. You have to put in some effort.

I think that your problem is way underdefined. We have no idea what material the hovering object is made of, are any characteristic of the electromagnet.
And the material like I already mentioned: it's magnetic, and if facing the electromagnet as such the like poles of material and magnet are facing each other. I don't know how can I be more clearer atm.
 
  • #13
Nibesh sharma said:
And the material like I already mentioned: it's magnetic, and if facing the electromagnet as such the like poles of material and magnet are facing each other. I don't know how can I be more clearer atm.
Maybe you mean unlike poles face each other?

Whatever the case, I don't think anyone will be able to come up with an answer for you. You want a magnet so strong that it will reach across 1 m of air to hold a 1kg weight in place, so say 10N at that distance. Magnets work best through narrow gaps of air. The big electromagnets on the end of cranes in metal scrapyards might not even manage your task.
 
  • #14
NascentOxygen said:
Maybe you mean unlike poles face each other?
I think the idea is the electromagnet is on the bottom and repelling the object while gravity is pulling down on the object, so you want the same poles facing each other.
 
  • #15
There is no simple calculation for what you are asking, and it is most probably not achievable.

Thread closed.
 

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