is there any electronic device that changes its weight according to the electricity?

i’m designing a pendant light and i am researching an electronic device,(or any other sorts) that will change its weight according to the electricity(so when the switch is on and electricity is supplied, it becomes either lighter or heavier).

Or, alternatively, is there any sensors or device that will change its weight according to the intensity of the light?

thank you!

Dear Justin:

This is a MOST UNUSUAL question!

It makes me wonder why you would want to know or do this, but I will NOT answer your question with a question, although you could add additional comments.

First, WEIGHT is a FORCE due to the ACCELERATION OF GRAVITY acting on a MASS. In oder to change the weight of an object, you would have to change it’s mass, or, change gravity. We’re not about to change gravty, so that leaves mass as the variable to change.

I suppose a battery would change it’s weight as it is being charged, but I don’t think you could measure the change in weight by any ordinary means!

Batteries store electricity, and that means storing electrons which do have mass, but oh sooooooooo tiny amount of mass! (about 9.1 X 10 exp -28 grams)

Is this question "just in fun?" It’s fun to think about.

2 Responses to “is there any electronic device that changes its weight according to the electricity?”

  1. Brad B, on September 15th, 2009 at 11:55 am Said:

    Dear Justin:

    This is a MOST UNUSUAL question!

    It makes me wonder why you would want to know or do this, but I will NOT answer your question with a question, although you could add additional comments.

    First, WEIGHT is a FORCE due to the ACCELERATION OF GRAVITY acting on a MASS. In oder to change the weight of an object, you would have to change it’s mass, or, change gravity. We’re not about to change gravty, so that leaves mass as the variable to change.

    I suppose a battery would change it’s weight as it is being charged, but I don’t think you could measure the change in weight by any ordinary means!

    Batteries store electricity, and that means storing electrons which do have mass, but oh sooooooooo tiny amount of mass! (about 9.1 X 10 exp -28 grams)

    Is this question "just in fun?" It’s fun to think about.
    References :
    http://whatis.techtarget.com/definition/0,,sid9_gci839930,00.html

  2. joshnya68, on September 15th, 2009 at 12:44 pm Said:

    You can’t add mass or weight to something by simply energizing it with electricity. You have to add mass or material to the item for it to gain weight. So I suppose you could have a little electric conveyor belt dump some steel on your device…….
    References :

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