1. Gold vs Feathers

BEWARE this is a TRICK Question:

Which weighs more: a pound of gold or a pound of feathers?

Steve

2. Re: Gold vs Feathers

<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>The mass of a pound of gold and a pound of feathers is the same (namely, a pound), but their weight depends on where (and how) you weigh them. So I don't think we have enough information.</font color=yellow></span hi>

3. Re: Gold vs Feathers

Yes their respective weights depends on the gravity where they are weighed. But assume they are compared using a pan balance: The gold on on side and the feathers on the other. Are they balanced or is one side heavier.

Hans,
<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>You are INCORRECT, they do NOT have the same MASS</font color=yellow></span hi>

Steve

4. Re: Gold vs Feathers

<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>I thought that the pound (avoirdupois) is a unit of mass (Googling yields that the official definition is 1 pound (avoirdupois) = 0.45359237 kilograms). The corresponding unit of weight is pound-force (lbf).</font color=yellow></span hi>

5. Re: Gold vs Feathers

You are on the right track:
<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>Pound of feathers (avdp) = 0.4536 Kg

The trick is how many KILOGRAMS is a POUND of gold? </font color=yellow></span hi>

Steve

6. Re: Gold vs Feathers

<img src=/S/bwaaah.gif border=0 alt=bwaaah width=123 height=15>

7. Re: Gold vs Feathers

Here is the Trick:

<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>Gold is weighed using a DIFFERENT POUND (called Troy or apothecary pound). The troy pound is used to measure precious metals.

A pound of gold is only 0.3732 Kg vs an advp lb of 0.4536 Kg

Another odd thing thing: there are ONLY 12 (troy) ounces in a (troy) pound (each = 31.1 g), but 16 (avdp) ounces in a (avdp) pound (each 28.3 g).

So even though a pound of gold has LESS MASS than a pound of feathers, an OUNCE of gold has MORE MASS than an ounce of feathers!</font color=yellow></span hi>

Don't you love a "non-metric" system!
Steve

8. Re: Gold vs Feathers

I can only repeat my previous reply...

9. Re: Gold vs Feathers

I said it was a TRICK question.

<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>Most ASSUME the trick is that they weigh the same, something they learned pre-teen in school!</font color=yellow></span hi>

Steve

10. Re: Gold vs Feathers

And here I was looking up old 1

11. Hammer vs Feather

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