- #1
smiddleton
- 18
- 0
Hey guys, sorry if this is wrong place to post this. If it is let me and I will try and find the right place. It was the only category where I saw something about energy and physics. This is also probably a basic question but I hope you don't mind me asking.
Let's say you have an electro magnet that takes 10 watts to hold a 10 pound weight for 1 hour and your power supply is a 20 watt hour battery. That means it could hold that weight for 2 hours.
You also have a permanent magnet that can also hold a 10 pound weight for 1 year before its magnetic field decays and the weight drops. Does that mean that one could say that the permanent magnet is outputting the equivalent of 87650 Watt hours to hold that weight for 1 year? I came to 87650 by multiplying 10 watts by the hours in a year.
I hope that makes sense and this isn't a stupid question. Thanks in advance.
SM
Let's say you have an electro magnet that takes 10 watts to hold a 10 pound weight for 1 hour and your power supply is a 20 watt hour battery. That means it could hold that weight for 2 hours.
You also have a permanent magnet that can also hold a 10 pound weight for 1 year before its magnetic field decays and the weight drops. Does that mean that one could say that the permanent magnet is outputting the equivalent of 87650 Watt hours to hold that weight for 1 year? I came to 87650 by multiplying 10 watts by the hours in a year.
I hope that makes sense and this isn't a stupid question. Thanks in advance.
SM